• A. 53
• B. 55
• C. 63
• D. 73

Answer: Option C

Explanation:

• A. $\frac{\mathrm{\pi }}{4}$
• B. $\frac{\mathrm{\pi }}{2}$
• C. $\frac{\mathrm{\pi }}{3}$
• D. $\frac{2\mathrm{\pi }}{3}$

Answer: Option A

Explanation:

• A. $-2\sqrt{3}$
• B. $0$
• C. $2\sqrt{3}$
• D. $3\sqrt{3}$

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. 3
• B. 2
• C. 1

Answer: Option D

Explanation:

• A. $x-y$
• B. $x+y$
• C. $\left(x^2-y^2\right)\left(x^3+y^3\right)$
• D. $\left(x-y\right)\left(x+y\right)\left(x^2-xy+y^2\right)$

Answer: Option B

Explanation:

• A. $\frac{121}{81}$
• B. $\frac{119}{81}$
• C. $\frac{81}{121}$
• D. $-\frac{121}{81}$

Answer: Option A

Explanation:

• A. $8\sqrt{2}$
• B. $16\sqrt{1}$
• C. $18\sqrt{3}$
• D. $24\sqrt{3}$

Answer: Option D

Explanation:

• A. $a=a^{\frac{x}{yz}}$
• B. $a=a^{\frac{y}{zx}}$
• C. $b=c^{\frac{x}{yz}}$
• D. $a=a^{xyz}$

Answer: Option D

Explanation:

• A. $0$
• B. $\sqrt{2}$
• C. $2$
• D. $4$

Answer: Option A

Explanation:

• A. $\frac{১}{৪৯}$অংশ
• B. $\frac{১}{১৪}$অংশ
• C. $\frac{১}{৭}$অংশ
• D. সম্পূর্ণ কাজ

Answer: Option C

Explanation:

• A. $\frac{১}{৪}$
• B. $\frac{৪}{৯}$
• C. $\frac{৯}{২০}$
• D. $\frac{৯}{৪}$

Answer: Option D

Explanation: