1 . a2 + 3a - 40 এর একটি উৎপাদক-
- A. a – 8
- B. a + 5
- C. a + 13
- D. a + 8
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2 . a + 1/a = √3 হলে a2 + 1/a2 এর মাণ -
- A. 6
- B. 4
- C. 2
- D. 1
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3 . (a-b),(a2-ab),(a2-b2) এর লসাগু কোনটি ?
- A. a2-b2
- B. a(a-b)
- C. (a-b)
- D. a(a2-b2)
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4 . If 0 < a2 < b, which of the following statements is/are always true? i. a < b/a ii. a4 < a2b iii. a2/b < 1
- A. i only
- B. i and ii
- C. ii and iii
- D. i and iii
- D. i, ii and iii
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5 . If a + b = √5 and a - b = √3, then a2 + b2 =?
- A. √8
- B. 6
- C. 4
- D. 4√2
- D. 8
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6 . If b + a = x and a - b = y, then a2 - b2 =
- A. (x2 - y2)/2
- B. (x2 - y)/2
- C. 2xy
- D. xy/2
- D. xy
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7 . To add two cell (A1 and A2) together you use the following formula--
- A. = A1 + A2
- B. =Add(A1+A2)
- C. =together(A1:A2)
- D. A1 plus A2
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8 . If for a square matrix A , A2=A then such a matrix is known as :
- A. Idempotent matrix
- B. Orthagonal matrix
- C. Null matrix
- D. Identity matrix
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9 . (a+b)(a2−ab+b2) =?
- A. a 3 − b 3
- B. a 3 + b 3
- C. a 6 − b 6
- D. a 6 + b 6
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10 . a2−b2=20 ; a+b=5, what is the value of a - b ?
- A. 3
- B. 15
- C. 5
- D. 4
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11 . a+b=12 এবং ab=35 হলে a2+b2 এর মান কত হলে ?
- A. 4
- B. 49
- C. 74
- D. 214
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12 . What is the product of (6a2b3c4) and (3a3b4c)?
- A. 9a5b7c4
- B. 9a5b7c5
- C. 18a5b7c5
- D. 18a5b7c4
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13 . If 0 < a2 < b, which of the following statements is/are always true? i. a < b/a ii. a4 < a2b iii. a2/b < 1
- A. i only
- B. i and ii
- C. ii and iii
- D. i and iii
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14 . loga243 = কত?
- A. 6
- B. 5
- C. 4
- D. 3
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15 . loga + loga2 + loga3+ ..... ধারাটির প্রথম 7টি পদের সমষ্টি কত?
- A. 28 loga
- B. 56 loga
- C. 7 loga
- D. 8 loga
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16 . a2 + b2 = কত?
- A. (a - b)2 -2ab
- B. (a - b)2 - 4ab
- C. (a + b)2 + 2ab
- D. (a + b)2 - 2ab
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17 . যদি a, b বাস্তব সংখ্যা হয় এবং a ≠ 0, b ≠ 0 হয়, তবে a2b0 + b2a0 এর মান কত?
- A. a + b
- B. 2
- C. 0
- D. a2 + b2
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18 . a2 - b2 + 4bc - 4c2 এর উৎপাদক কোনটি?
- A. (a + b + c) (a - b + c)
- B. (a - b + 2c) (a + b + c)
- C. (a + b - 2c) (a - b + 2c)
- D. (a2 + b2 - 2c) (a - b + 2c)
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19 . a2 - 1 + 2b - b2 এর উৎপাদক কোনটি?
- A. (a - b - 1) (a + b - 1)
- B. (a - b + 1) (a + b - 1)
- C. (a + b - 1)
- D. (a - b + 1)
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20 . a3 - 2a2 - 3a + 4 এর উৎপাদক কোনটি?
- A. (a + 1) (a2 - a - 4)
- B. (a - 1) (a2 + a - 4)
- C. (a + 1) (a2 + a + 4)
- D. (a - 1) (a2 - a - 4)
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21 . a2 - c2 + 2ab + b2 এর উৎপাদক কোনটি?
- A. (a - b + c) (a - b + c)
- B. (a + b + c) (a + b - c)
- C. (a + b + c) (a - b - c)
- D. (a - b + c) (a - b - c)
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22 . a4 + a2 + 1 এর উৎপাদক কোনটি?
- A. (a2 + a + 1) (a2 + a + 1)
- B. (a2 - a - 1) (a2 - a - 1)
- C. (a2 - a + 1) (a2 + a - 1)
- D. (a2 + a + 1) (a2 - a + 1)
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23 . দুটি সংখ্যার ল.সা.গু a2b(a + b) এবং গ.সা.গু a(a + b)।একটি সংখ্যা a3 + a2b হলে, অপর সংখ্যাটি কত?
- A. a2b + a2b2
- B. a2b + ab2
- C. ab2 + a2b2
- D. a3 - b3
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24 . a2b(a3 - b3), a2b2(a4 + a2b2 + b4) এবং (a3 + b3) এর ল.সা.গু নির্নয় করুনঃ
- A. a3b(a6 - b6)
- B. a3b3(a6 - b6)
- C. a2b2(a6 - b6)
- D. ab(a5 - b5)
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25 . a(a+b), a2(a-b) ল.সা.গু কত?
- A. a2
- B. a
- C. a2 - b2
- D. a2(a2 - b2)
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26 . a2b3c2d কে a3b2cd3 দ্বারা ভাগ করলে ভাগফল কত?
- A. ab2ca
- B. ab2cd
- C. b2cad
- D. bd2ac
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27 . x - aa2 - b2 = x - bb2 - a2 হলে x = কত?
- A. a
- B. ab
- C. a + b
- D. 12(a + b)
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28 . ax + by = a2 + b2 এবং 2bx - ay = ab সমীকরণে (x, y) এর মান কত?
- A. (3a, 4b)
- B. (2a, b)
- C. (b, a)
- D. (a, b)
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29 . সমাধান করুনঃ x - y = 2a ax + by = a2 + b2
- A. x = 2a, y = 0
- B. x = a, y = b
- C. x = a - b, y = a + b
- D. x = a + b, y = b - a
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30 . সমাধান করুনঃ ax - cy = 0 ay - cx = a2 - c2
- A. x = a, y = c
- B. x = c, y = a
- C. x = - c, y = a
- D. x = c, y = - a
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31 . (a - 5) (x + a) = a2 - 25 হলে x এর মান কত?
- A. 5
- B. 25
- C. -5
- D. -25
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32 . যদি a + b = m, a2 + b2 = n এবং a3 + b3 = p3 হয়, তবে m3 + 2p3 -এর মান কত?
- A. m2 + n2 + 2
- B. 3mn
- C. 6mn
- D. 6m
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33 . (a + b)2 = 36 এবং (a - b)2 = 16 হলে, ab এবং (a2 + b2) -এর মান যথাক্রমে--
- A. 10, 5
- B. 15, 25
- C. 25, 20
- D. 5, 26
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34 . a - 1/a = 5√3 হলে, a2 + 1/a2 = কত?
- A. 77
- B. 70
- C. 60√3
- D. 55√3
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35 . a - 6/a = 1 হলে, 6/(a2 - a - 1) এর মান কত?
- A. 6/5
- B. 6/8
- C. 7/4
- D. 3/8
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36 . a2 + 1/a2 = 51 হলে, a - 1/a এর মান কত?
- A. ±4
- B. ±6
- C. ±8
- D. ±7
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37 . a - 1/a = 3 হলে, a2 + 1/a2 = কত?
- A. 15
- B. 11
- C. 13
- D. 18
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38 . a + b = 12 এবং ab = 35 হলে, a2 - b2 এর মান কত?
- A. -24
- B. ±24
- C. 14
- D. 24
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39 . a2 + 1 = 4a হুলে, a/(a2 - 3a + 1) এর মান কত?
- A. a
- B. 1
- C. 2a
- D. 2
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40 . a - 1/a = 4 হলে, a2 + 1/a2 = কত?
- A. 18
- B. 22
- C. 16
- D. 14
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41 . a - 1/a = p হলে, a2 + 1/a2 এর মান কত?
- A. 0
- B. p2 + 2
- C. p2 - 2
- D. p3
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42 . a + 1/a = 2 হলে a2 + 1/a2 = কত?
- A. 2
- B. 4
- C. 8
- D. 12
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43 . a + 1/a = 2 হলে a/(a2 + a - 1) এর মান কত?
- A. 4
- B. 3
- C. 2
- D. 1
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44 . a2 - x2a + y × a2 - y2ax + x2 × 1a - x = কত?
- A. a + yx
- B. a - yx
- C. x + ay
- D. x - ya
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45 . a2 + b2 - c2 +2aba2 - b2 + c2 +2ac = কত?
- A. a +b + c
- B. a + b - ca - b + c
- C. a - b + ca + b - c
- D. a + b - ca + b + c
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46 . 9a2 + 16b2 রাশিটির সাথে কোনটি যোগ করলে যোগফল পূর্ণ বর্গ হবে?
- A. 12ab
- B. 24ab
- C. 36ab
- D. 144ab
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47 . (4a2 + 9b2) রাশিটির সাথে কোনটি যোগ করলে যোগফল একটি পূর্ণ বর্গ হবে?
- A. 6ab
- B. 12ab
- C. 18ab
- D. 24ab
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48 . a2 - 2ab থেকে কত বিয়োগ করলে বিয়োগফল একটি পূর্ণ বর্গ হবে?
- A. -b2
- B. b
- C. b3
- D. -a
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49 . a = 15 এবং b = 6 হলে 9a2 - 48ab + 64b2 -এর মান নির্নয় করুন?
- A. 8
- B. 5
- C. 6
- D. 9
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50 . যদি a2 + 1/a2 = 51 হয়, তবে a - 1/a এর মান কত?
- A. ±9
- B. ±7
- C. ±5
- D. ±3
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51 . a + 1/a = 3 হলে a2 + 1/a2 এর মান কত?
- A. 6
- B. 4
- C. 2
- D. 7
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52 . a3 + b3a + b কে a4 + b4 + a2b2a3 + b3 দিয়ে ভাগ করলে ভাগফল কত হবে?
- A. a + b
- B. a - b
- C. a2 + b2
- D. a2 - b2
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53 . a = 2, b = 3 হলে 2a + 4b এর সাথে 2a2 +a - b যোগ করলে যোগফল কত হবে?
- A. 15
- B. 17
- C. 19
- D. 23
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54 . (a + b)2, a2 - b2 এর ল.সা.গু. কোনটি?
- A. (a + b)2
- B. (a - b)2
- C. (a + b)2 (a - b)
- D. (a2 - b2)
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55 . 2a2b, 3ab2c এর ল.সা.গু. কত?
- A. 3abc
- B. 6abc
- C. 6a2b2c
- D. 2abc
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56 . a2 + ab, a2 - b2 এর গ.সা.গু. কত?
- A. ab
- B. a - b
- C. a2 - b2
- D. a + b
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57 . যদি a + b = 4 এবং a2 + b2 = 8 হয়, তবে a3 + b3 এর মান কোনটি?
- A. 12
- B. 16
- C. 16
- D. 24
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58 . এজেন্সি টু ইনোভেট (a2i) প্রতিষ্ঠা করা হয় কবে?
- A. ৫ ফেব্রুয়ারি ২০২৪
- B. ৭ ফেব্রুয়ারি ২০২৪
- C. ৯ ফেব্রুয়ারি ২০২৪
- D. ১০ ফেব্রুয়ারি ২০২৪
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59 . এজেন্সি টু ইনোভেট (a2i) কোন মন্ত্রণালয়ের অধীন?
- A. প্রধানমন্ত্রীর কার্যালয়
- B. বিজ্ঞান ও প্রযুক্তি মন্ত্রণালয়
- C. প্রতিরক্ষা মন্ত্রণালয়
- D. ডাক,টেলিযোগাযোগ ও তথ্যপ্রযুক্তি মন্ত্রণালয়
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60 . যদি a = ৮ এবং b = a2 হয় যেখানে a = b নয়, তাহলে কোনটি সত্য?—
- A. a + b + 1 = 0
- B.
- C.
- D.
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61 . If a2 - b2 = 20, a+b = 5, what is the value of a - b ?
- A. 3
- B. 15
- C. 5
- D. 4
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62 . a + b = 7, a - b = 3 হলে a2-b2 = কত?
- A. ১৭
- B. ১৯
- C. ২১
- D. ২৩
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63 . a + b = 7 এবং a2 + b2 = 25 হলে নিচের কোনটি ab এর মান হবে?
- A. 12
- B. 10
- C. 6
- D. কোনটিই নয়
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64 . 6a2bc
- A.
- B.
- C.
- D. কোনোটিই নয়
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65 . যদি (a - b) = 3 এবং a2 + b2 = 29 হয় তাহলে ab এর মান কত ?
- A. ২০
- B. ১৫
- C. ১০
- D. ২৫
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66 . (a+b)2 ও a2 -b2 এর গ.সা.গু. কত?
- A. a2 − b2
- B. ( a + b )2 ( a − b )
- C. a+b
- D. a - b
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67 . 1a2+1b2
- A.
- B.
- C.
- D.
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68 . 4a+b,10a-b
- A.
- B.
- C.
- D.
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69 . 1-a2+2ab-b2
- A.
- B.
- C.
- D.
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70 . A=x∈N:a2>8,x3<30
- A. 2
- B. 3
- C. 4
- D. 5
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71 . a2+1a2=51
- A.
- B.
- C.
- D.
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72 . a2-3a,a3-9aএবংa3-4a2+3a
- A.
- B.
- C.
- D.
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73 . a+b=7 এবং a2+b2=25
- A. 12
- B. 10
- C. 6
- D. None of them
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74 . a+b,a2-b2
- A.
- B.
- C.
- D.
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75 . a+1a=3
- A. 6
- B. 4
- C. 2
- D. 1
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76 . a2+b2-c2+2aba2-b2+c2+2ac=?
- A.
- B.
- C.
- D.
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77 . a+b+c=9, a2+b2+c2=29
- A. 52
- B. 46
- C. 26
- D. 22
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78 . a+b,a2-b2
- A.
- B.
- C.
- D.
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79 . a+1a=4
- A. 12
- B. 14
- C. 16
- D. 9
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80 . a-b=7,ab=60
- A. 180
- B. 168
- C. 169
- D. 170
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81 . a+b+c=9
- A. 19
- B. 20
- C. 17
- D. 18
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82 . a2-b2=8
- A.
- B.
- C.
- D.
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83 . a-1a=3
- A. 14
- B. 16
- C. 11
- D. 12
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84 . a-ba2-aba2-b2
- A.
- B.
- C.
- D.
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85 . a+1a=3
- A. 11
- B. 13
- C. 7
- D. 9
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86 . a2+1a2=2, a-1a =?
- A. 3
- B. 0
- C. 1
- D. 2
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87 . 2a2+6a-80
- A.
- B.
- C.
- D.
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88 . a-1a=4
- A. 22
- B. 18
- C. 16
- D. 14
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89 . a+b+c=9 , ab + bc + ca =31
- A. 49
- B. 39
- C. 29
- D. 19
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90 . a2-3a,a2-9,a2-4a+3
- A.
- B.
- C.
- D.
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91 . a+b=7
- A.
- B.
- C.
- D.
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92 . a+1a2=3
- A.
- B.
- C.
- D.
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93 . a-1a=3
- A. 7
- B. 9
- C. 11
- D. 13
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94 . a=2, b = 3
- A. 15
- B. 17
- C. 19
- D. 23
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95 . a+b=7
- A. 29
- B. 59
- C. 49
- D. 69
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96 . 24a+b,10a-b
- A.
- B.
- C.
- D.
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97 . a+1a=4
- A. 14
- B. 12
- C. 16
- D. 18
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98 . a-1a=5
- A. 20
- B. 23
- C. 25
- D. 27
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99 . a+b=12
- A. 4
- B. 49
- C. 74
- D. 214
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100 . 9a2+16b2
- A.
- B.
- C.
- D.
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101 . a+b=7
- A. 29
- B. 49
- C. 59
- D. 69
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102 . a+1a=3
- A. 7
- B. 9
- C. 11
- D. 13
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103 . a-1a=8
- A. 60
- B. 66
- C. 68
- D. 70
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104 . 2a2+b2=
- A.
- B.
- C.
- D.
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105 . a+b+c=0
- A. abc
- B. 3abc
- C. 6abc
- D. 9abc
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106 . a2-5a-6
- A.
- B.
- C.
- D.
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107 . a-1a=3
- A. 7
- B. 9
- C. 11
- D. 13
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108 . a-6a=1
- A.
- B.
- C.
- D.
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109 . x-aa2-b2=x-bb2-a2
- A.
- B.
- C.
- D.
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110 . a-1a=3
- A. 7
- B. 9
- C. 11
- D. 13
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111 . a=15 & b= 6 হলে 9a2 -48ab + 64b2-এর মান নির্ণয় করুন।
- A. ৮
- B. ৯
- C. ৬
- D. ৫
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112 . a-1a=3
- A. 11
- B. 12
- C. 14
- D. 16
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113 . a+b+c=0
- A.
- B.
- C.
- D.
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114 . To find the average value of A1, A2, A3, which of the following is not a correct formula ?
- A. = Sum (A1 : A3)/3
- B. = (A1 : A3)/3
- C. = (A1-A2+A3)/3
- D. = Average (A1:A3)
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115 . a2+b2=45
- A. 21
- B. 18
- C. 13
- D. 24
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116 . a2+1<2a+4
- A.
- B.
- C.
- D.
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117 . a2-b2
- A. 1
- B. (a-b)
- C. (a+b)
- D.
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118 . a2+2ab-2b-1
- A. a+1
- B. b+1
- C. a-2
- D. a-1
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119 . a+1a=3
- A. 11
- B. 13
- C. 7
- D. 9
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120 . a2+b2
- A. 25
- B. 17
- C. 11
- D. 1
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121 . a-5a+x=a2-25
- A. 5
- B. 6
- C. 7
- D. 8
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122 . a2+b2
- A. 27
- B. 18
- C. 9
- D. 5
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123 . a2+b2+c2 =
- A. 49
- B. 39
- C. 29
- D. 19
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124 . a+b=7
- A. 12
- B. 24
- C. 36
- D. 40
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125 . a2-a-56
- A. 7, -8
- B. 8, -7
- C. 5, -6
- D. 14, -4
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126 . a2+2ab-c
- A. 1
- B. 2
- C. 4
- D. 6
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127 . a2-b2
- A. 16
- B. 32
- C. 36
- D. 49
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128 . a2+b2+c2
- A. 160
- B. 175
- C. 165
- D. 155
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129 . a2+b2
- A. 5
- B. 10
- C. 15
- D. 20
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130 . 1-a2+2ab-b2
- A. (1+a+b)(1-a+b)
- B. (1+a+b)(1-a-b)
- C. (1+a+b)(1+a-b)
- D. (1+a-b)(1-a+b)
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131 . 2a4-5a3+6a2-5a+2
- A.
- B.
- C.
- D.
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132 . 4a2+9b2 রাশিটির সাথে কত যোগ করলে যোগফল পূর্ণবর্গ হবে?
- A. 6ab
- B. 12ab
- C. 18ab
- D. 24ab
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133 . 6a2bc
- A.
- B.
- C.
- D. কোনোটিই নয়
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134 . a2-b2
- A.
- B.
- C.
- D.
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135 . 9a3b2c2,9a3b2c212a2bc,15ab3c3
- A. 9abc
- B.
- C.
- D. 3abc
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136 . a2-3a,a3-9a
- A. a(a-3)
- B. a-3
- C. a
- D. a(a+3)
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137 . a2+b2?
- A. 94
- B. 79
- C. 34
- D. 30
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138 . x=a2-7a+6,y=a2-2a+1,z=a2-5a+4
- A.
- B.
- C.
- D.
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139 . a2+b2+c2=9
- A. 16
- B. 8
- C. 34
- D. 12
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140 . a2-2ab+b2=
- A. 36
- B. 100
- C. 289
- D. 374
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141 . a2+b2+c2+2ab-2bc
- A. -2ab
- B. 2bc
- C. 2ca
- D. -2ca
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142 . a2+b2=25
- A. 12
- B. 60
- C. 35
- D. কোনটিই না
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143 . a2-2+1/a24
- A. 6
- B. 8
- C. 2
- D. 9
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144 . a3-b3a+b
- A.
- B.
- C.
- D.
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145 . a4-51a2+1=0
- A.
- B.
- C.
- D.
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146 . 16a2-ab+49
- A. 48
- B. 56
- C. 49
- D. 32
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147 . 2a2+7ab-15b2
- A. (a+5b)(2a-3b)
- B. (a-5b)(2a+3b)
- C. (a-5b)(2a-3b)
- D. (a-5b)(a+5b)
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148 . a2+b2
- A. ab
- B. 2ab
- C. 3ab
- D. -ab
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149 . 2a2+6a-80
- A.
- B.
- C.
- D.
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150 . a2-6a+1=0
- A.
- B.
- C. 6
- D. 9
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151 . xy+2ay+3ax+6a2=?
- A. x(x+a)(y+3a)
- B. (x+7a)(y+3a)
- C. (x+5a)(y+3a)
- D. (x+2a)(y+3a)
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152 . a3-3a2-1
- A. 124
- B. 126
- C. 64
- D. 216
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153 . a2+b2+c2=কত ?
- A. 1
- B. 2
- C. 4
- D. 3
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154 . a2-b2
- A. 34
- B. 39
- C. 36
- D. 49
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155 . a2+b2
- A. 40
- B. 36
- C. 36
- D. 34
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156 . a2=b3=c4
- A. 4 : 3 : 2
- B. 6 : 7 : 8
- C. 8 : 7 : 6
- D. 2 : 3 : 4
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157 . a2=b2
- A.
- B.
- C.
- D. কোনটিই নয়
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158 . a+1a=4
- A. 14
- B. 12
- C. 16
- D. 18
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159 . a2+b2
- A. 69
- B. 79
- C. 89
- D. 91
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160 . a+b+c=9,a2+b2+c2=29
- A. 52
- B. 46
- C. 26
- D. 22
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161 . x2a2+y2b2=1
- A.
- B.
- C.
- D.
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162 . 25% Na2CO3 দ্রবনের ঘনমাত্রা মোলারিটিতে কত?
- A. 0.94 M
- B. 2.36 M
- C. 2.20 M
- D. 2.10 M
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163 . ∫0a1a2-x2dx=2 ?
- A.
- B.
- C.
- D.
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164 . x2a2-y2b2=1
- A.
- B.
- C.
- D.
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165 . tan-12x1-x2=sin-12a1+a2+cos-11-b21+b2
- A.
- B.
- C.
- D.
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166 . ১ লিটার ডেসিমোলার Na2CO3 দ্রবণে কত গ্রাম Na2CO3 Na2CO3 খাকব?
- A. 5.3 g
- B. 10.6 g
- C. 22 g
- D. 99 g
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167 . A2,B2
- A. -1
- B. 1
- C. 0
- D. 2
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168 . a2x+a2y=1
- A. বৃত্ত
- B. উপবৃত্ত
- C. অধিবৃত্ত
- D. সরলরেখা
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169 . A=123-4
- A. অভেদক ম্যাট্রিক্স
- B. প্রতিসম ম্যাট্রিক্স
- C. শূন্য ম্যাট্রিক্স
- D. কোনটিই নয়
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170 . Na2CO3
- A. 26.5 g
- B. 2.65 g
- C. 10.6 g
- D. 1.60 g
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171 . NaCO2
- A.
- B.
- C.
- D.
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172 . Na2CO3
- A. 26.5
- B. 10.6
- C. 8.6
- D. 1.06
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173 . Na2CO3
- A. 300
- B. 400
- C. 500
- D. 600
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174 . x2a2+y2b2=1
- A.
- B.
- C.
- D.
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175 . Na2CO3
- A. 50.0 mL
- B. 25.0 mL
- C. 100.0 mL
- D. 10.0 mL
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176 . 5%Na2CO3
- A. 0.47 M
- B. 0.047 M
- C. 0.236 M
- D. 0.0236 M
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177 . 10% Na2CO3 দ্রবণ এর মোলারিটি কত?
- A. 0.94 M
- B. 0.96 M
- C. 1.26 M
- D. 2.50 M
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178 . if y=xx2+a2−−−−−−√ then dydx= ?
- A. 2x2-a2/x2+a2<
- B. 2x2-a2/x2+a2=
- C. 2x2-a2/x2+a2>
- D.
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179 . A21 প্রকল্পটি কাজ করে কল সেন্টারের মতো i. বিদ্যালয় পর্যায়ে ii. বিশ্ববিদ্যালয় পর্যায়ে iii. ইউনিয়ন পর্যায়ে নিচের কোনটি সঠিক?
- A. i ও ii
- B. i ও iii
- C. ii ও iii
- D. i, ii ও iii
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180 . 250 ML পাতিত পানিতে 10.6 g বিশুদ্ধ Na2CO3 দ্ররবীভূত করলে উৎপন্ন দ্রবণটির ঘনমাত্রা হবে ?
- A. 0.4 N
- B. 0.4 M
- C. 2 N
- D. 2 M
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181 . 200 ml 0.075M দ্রবণ তৈরিতে কি পরিমান Na2CO3 প্রয়োজন?
- A. 1.59 g
- B. 10.60 g
- C. 2.18 g
- D. 0.53 g
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182 . Na2 CO3 এর জলীয় দ্রবণ কোন প্রকৃতির ?
- A. নিরপেক্ষ
- B. এসিডিয়
- C. উভয়ধর্মী
- D. ক্ষারীয়
- D. কোনোটিই নয়
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183 . যদি A+B+C= π হয় তবে sin2 A2+sin2 B2+sin2 C2 সমান−
- A. 1-2 sin A2sin B
- B. 1−2 sin A2sin B2
- C. null
- D.
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184 . 200 ml 0.075M দ্রবণ তৈরীতে কি পরিমাণ Na2CO3 প্রয়োজন ?
- A. 1.59 g
- B. 10.60 g
- C. 2. 18 g
- D. 0.53 g
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185 . 300 mL 0,25 M দ্রবণ তৈরি করতে কি পরিমাণ Na2CO3 প্রয়োজন ?
- A. 8,00 g
- B. 7.95 g
- C. 5.30 g
- D. 10. 60 g
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186 . একটি যৌগ 'X' । যৌগটি NaOH ও জলীয় Na2CO3 এর সঙ্গে বিক্রিয়া করে। 'X' যৌগটি কি হবে?
- A. CH3CH=CH2
- B. CH3CH2CH2OH
- C. CH3CH2CH3
- D. CH3CH2COOH
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187 . 50 mL 0.01M Na2CO3 দ্রবনকে প্রশমিত করতে 0.2M HCl কতটুকু প্রয়োজন?
- A. 4.0 mL
- B. 5.0 mL
- C. 10.0 mL
- D. 15.0 mL
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188 . 100 mL 0.01 M Na2CO3 দ্রবণকে প্রশমিত করার জন্য 0.2 M HCl দ্রবণের যে আয়তন প্রয়োজন হবে ।
- A. 4.0 mL
- B. 10.0 mL
- C. 2.0 mL
- D. 20.0 mL
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189 . একটি 250 c m3 দ্রবণে 5.3 g Na2 CO3 দ্রবীভূত রয়েছে। এই দ্রবণটির ঘনমাত্রা কত মোলার হবে -
- A. 0.2 M
- B. 5.3 M
- C. 10.6 M
- D. 1.0 M
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190 . a + b = 7 এবং a2 + b2 = 25 হলে নিচের কোনটি 2 ab এর মান হবে?
- A. ৬
- B. কোনটিই নয়
- C. ১০
- D. ১২
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191 . 10% Na2CO3 দ্রবণের মোলার ঘনমাত্রা কত?
- A. 10 mol/L
- B. 0.9434 mol/Kg
- C. 9.434 mol/L
- D. 0.9434 M
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192 . a + b = 5 এবং ab = 12 হলে a2 + b2 কত?
- A. 2
- B. 3
- C. 4
- D. 1
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193 . 300 m l 0.25 M দ্রবন তৈরি করতে কি পরিমান Na2 CO3 প্রয়োজন?
- A. 8.00g
- B. 7.95g
- C. 5.30g
- D. 10.60g
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194 . বর্গাকার কোন ম্যাট্রিক্স A-এর ক্ষেত্রে যদি A2 = A হয়, তবে সেই ম্যাট্রিক্সটি
- A. সমঘাতি
- B. প্রতিসম
- C. পর্যায়বৃত্ত
- D. অভেদঘাতি
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195 . x2 + y2 + 2x − 2y + 1 = 0 বৃত্তটি x2 + y2 = a2 বৃত্তকে অন্তঃস্থভাবে স্পর্শ করলে a এর মান কত?
- A. 1
- B. √2
- C. -√2
- D. 1+√2
- D. 1-√2
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196 . যদি f একটি এক-এক বাস্তব ফাংশন এবং f ( a2 + 1 ) = f ( 4 a ) হয়, তবে α এর মান কোনটি?
- A. 1
- B. – 1
- C. 2 + √3
- D. 2 + i√3
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197 . a = b হলে, a3 − 7a2b + 7ab2 − b3 = কত?
- A. 2b
- B. 0
- C. 8a
- D. 6b
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198 . a - b = 3, ab = 4 হলে a2 + b2 এর মান কত?
- A. 12
- B. 15
- C. 17
- D. 20
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199 . a2 − a − 56 হলে a এর মান কত?
- A. 7, -8
- B. 8, -7
- C. 5, -6
- D. 14, -4
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200 . If a2 + 7a < 0 then which one of the following could be the value of a?
- A. -3
- B. 0
- C. 1
- D. 3
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201 . যদি a+b+c=12, a+b=4 এব a+c=7 হয়, তাহলে a2 এর মান কত?
- A. 2
- B. 1
- C. 4
- D. 3
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202 . যদি a=17 এবং b=11 হয়,তবে a2− 2ab + b2 = কত ?
- A. 36
- B. 100
- C. 289
- D. 374
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203 . If a2b is negative, which of the following must be true?
- A. a < 0
- B. b < 0
- C. ab > 0
- D. ab < 0
- D. None
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