• A. $4$
• B. $4i$
• C. $-4$
• D. $-4i$

Answer: Option C

Explanation:

• A. -2, 9
• B. 2, 9
• C. -2, -9
• D. 2, -9

Answer: Option B

Explanation:

• A. $-81$
• B. $81$
• C. $\pm 81$
• D. $\pm 27$

Answer: Option B

Explanation:

• A. y/(x - y)
• B. xy/(x + y)
• C. x/(x + y)
• D. xy/(x - y)

Answer: Option B

Explanation:

• A. কোনোটিই নয়
• B. -5, a
• C. -5, a
• D. a, 5

Answer: Option C

Explanation:

• A. $\frac{n-1}{n+1}$
• B. $\frac{2n}{n+1}$
• C. $\frac{1}{n}$
• D. $\frac{n}{n+1}$

Answer: Option D

Explanation:

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

Answer: Option C

Explanation:

• A. $-1$
• B. $-5$
• C. $-8$
• D. $-3$

Answer: Option B

Explanation:

• A. $১{২}^{২}$
• B. $২{২}^{২}$
• C. $২{৪}^{২}$
• D. $২{৩}^{২}$

Answer: Option A

Explanation:

• A. $1$
• B. $0$
• C. $2$
• D. $10$

Answer: Option C

Explanation:

• A. $\sqrt{3}$
• B. $\frac{3}{2}$
• C. $3^2$
• D. $\frac{3}{2}$

Answer: Option D

Explanation:

• A. $a>0$
• B. $a \mathrm{Not}=1$
• C. $a>0,a \mathrm{Not}=1$
• D. $a \mathrm{Not}=1,a>2$

Answer: Option C

Explanation:

• A. $-6$
• B. $6$
• C. $-\frac{1}{6}$
• D. $\frac{1}{6}$

Answer: Option A

Explanation:

• A. $32$
• B. $8$
• C. $3$
• D. $\sqrt{8}$

Answer: Option D

Explanation: