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

Answer: Option C

Explanation:

• A. 180
• B. 184
• C. 188
• D. 190

Answer: Option D

Explanation:

• A. $5/6$
• B. $1/3$
• C. $1/6$
• D. $1$

Answer: Option A

Explanation:

• A. $m{a}^n$
• B. $n{a}^m$
• C. $\sqrt[m]{a^n}$
• D. $\sqrt[n]{a^m}$

Answer: Option D

Explanation:

• A. $\frac{1}{2}$
• B. $\frac{1}{3}$
• C. $5$
• D. $\frac{1}{5}$

Answer: Option B

Explanation:

• A. $\pm 3$
• B. $\pm \frac{1}{3}$
• C. $-3$
• D. $3$

Answer: Option D

Explanation:

• A. $4$
• B. $5$
• C. $25$
• D. $50$

Answer: Option A

Explanation:

• A. $1$
• B. $a$
• C. ${\log }_{a}1$
• D. $0$

Answer: Option D

Explanation:

• B. 1
• C. 2.27
• D. 2

Answer: Option B

Explanation:

• A. 7
• B. 9
• C. 10
• D. 11

Answer: Option D

Explanation:

• A. 320
• B. 325
• C. 340
• D. 330

Answer: Option D

Explanation:

• A. ১৩
• B. ১৬
• C. ১৯
• D. ২১

Answer: Option B

Explanation:

• A. ১১
• B. ১৩
• C. ১৪
• D. ১৫

Answer: Option C

Explanation:

• A. ৩৯৫০
• B. ৩৪৫০
• C. ৪৯৫০
• D. ৫৯৪০

Answer: Option C

Explanation:

• A. $a{m}^{m+n}$
• B. ${\left(ab\right)}^3$
• C. $a^m$
• D. $a^{m-n}$

Answer: Option B

Explanation: