1 . 1+2+3+4+------+99= কত?

• A. 4850
• B. 4950
• C. 4650
• D. 4750

Answer: Option B

Explanation:

2 . 1+2+3+4+------+20= কত?

• A. 210
• B. 212
• C. 214
• D. 220

Answer: Option A

Explanation:

3 . 1+2+3+4+------+18= কত?

• A. 168
• B. 171
• C. 174
• D. 176

Answer: Option B

Explanation:

4 . 1+2+3+4+ -------+22 =কত?

• A. 253
• B. 254
• C. 256
• D. 258

Answer: Option A

Explanation:

5 . 1+3+6+ ... +21+24 = কত?

• A. 218
• B. 23
• C. 108
• D. 109

Answer: Option D

Explanation:

6 . What is the sum of the following series? 1+2+3.........+100=?

• A. 5500
• B. 5050
• C. 5055
• D. 5850

Answer: Option B

Explanation:

7 . 1+2+3+ . . . . . . . +98 +99+100=?

• A. 5000
• B. 5050
• C. 10000
• D. 2500

Answer: Option B

Explanation:

8 . 1+2+3+4+------+19= কত?

• A. 180
• B. 184
• C. 188
• D. 190

Answer: Option D

Explanation:

9 . 1+2+3+...........................................................+100 what ?

• A. 5050
• B. 5055
• C. 5060
• D. None of these

Answer: Option A

Explanation:

10 . 1+2+3+…..+n=55 হলে n এর মান কত?

• A. 10
• B. 15
• C. 20
• D. 11

Answer: Option A

Explanation:

11 . limx→01+2x-1-3xx=

• A. 0
• B. 1
• C. -1
• D. কোনটিই নয়

Answer: Option C

Explanation:

12 . 21×21 এর 2121+21×21

• A. 9
• B. 441
• C. 1
• D. 21

Answer: Option B

Explanation:

13 . x=1+2

• A. 12
• B. 6
• C. 8
• D. 10

Answer: Option B

Explanation:

14 . 16-4x2

• A. $(x+2)$
• B. $(x+4)$
• C. ${(x+2)}^2$
• D. $2(x+2)$

Answer: Option D

Explanation:

15 .

• A. $\frac{n\left(n+1\right)}{2}$
• B. $\frac{n^2{\left(n+1\right)}^2}{4}$
• C. $n^2$
• D. $\frac{n\left(n+1\right)\left(n+2\right)}{6}$

Answer: Option A

Explanation:

16 . 1+2

• A. $12$
• B. $10$
• C. $8$
• D. $6$

Answer: Option D

Explanation:

17 . a2-1+2b-b2

• A. $\left(a+b+1\right)\left(a-b+1\right)$
• B. $\left(a+b+1\right)\left(a+b-1\right)$
• C. $\left(a+b+1\right)\left(a+b+2\right)$
• D. $\left(a+b-1\right)\left(a-b+1\right)$

Answer: Option D

Explanation: