391 . ত্রিভুজ ABC এর
- A. ৯০ ডিগ্রী
- B. ৬০ ডিগ্রী
- C. ৩০ ডিগ্রী
- D. ১২০ ডিগ্রী
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392 .
- A. 0.001
- B. 0.01
- C. 0.1
- D. 1.0
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393 . হলে কত?
- A. 27
- B. 47
- C. 57
- D. 77
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394 . হলে ab+bc+ca -এর মান কত ?
- A. 52
- B. 46
- C. 26
- D. 22
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395 . যদি a + b = 7 এবং ab = 12 হয় তবে হবে--
- A. 50
- B. 125
- C. 5
- D. 1
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396 . এবং xy=32 হলে x-y= কত ?
- A. 6
- B. 9
- C. 4
- D. 12
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397 . If a+b=13 and a-b=3 , then find the value of
- A. 69
- B. 79
- C. 89
- D. 91
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398 .
- A.
- B.
- C.
- D.
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399 . যদি এবং xy = 1 হয়, তবে কত?
- A. 14
- B. 11
- C. 12
- D. 13
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400 . হলে, কত ?
- A. 80
- B. 120
- C. 110
- D. 90
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401 . এবং এর মান কত?
- A. -12
- B. -48
- C. 42
- D. 21
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402 . a+1a=4 হলে এর মান কত ?
- A. 14
- B. 12
- C. 16
- D. 18
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404 . কোণের সম্পূরক কোণ কোনটি?
- A.
- B.
- C.
- D.
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405 . 9x+2=81,x=?
- B. 1
- C. 2
- D. 3
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