• A. $\angle AOD = \angle BOC$
• B. $\angle AOD = \angle BOD$
• C. $\angle BOC = \angle AOC$
• D. $\angle AOD = \angle BOA$

Answer: Option A

Explanation:

• A. $\frac{x}{y}$ঘণ্টা
• B. $x$ঘণ্টা
• C. $y$ঘণ্টা
• D. $\frac{y}{x}$ঘণ্টা

Answer: Option D

Explanation:

• A. $\sin 1°=\sin 179°$
• B. $\sin 1°<\sin 179°$
• C. $\sin 1°<\sin 180°$
• D. $\sin 1°=\sin 181°$

Answer: Option A

Explanation:

• A. $1:2$
• B. $1:4$
• C. $1 \sqrt{3}$
• D. $\sqrt{2} : \sqrt{3}$

Answer: Option A

Explanation:

• A. $3\sqrt{8}$
• B. $\sqrt{12}$
• C. $\sqrt{18}$
• D. $\sqrt{27}$

Answer: Option A

Explanation:

• A. $\frac{১১}{৩০}$
• B. $\frac{৯}{১৯}$
• C. $\frac{৩}{৫}$
• D. $\frac{১১}{১৫}$

Answer: Option A

Explanation:

• A. $\frac{৮}{১৫}$ঘণ্টা
• B. $\frac{৩}{৪}$ঘণ্টা
• C. $\frac{৫}{৪}$ঘণ্টা
• D. $\frac{২}{৩}$ঘণ্টা

Answer: Option C

Explanation:

• A. ৭১
• B. ৪১
• C. ৩১
• D. ৩৯

Answer: Option C

Explanation:

• A. $3N$
• B. $\sqrt{11}N$
• C. $\sqrt{41}N$
• D. $1N$

Answer: Option C

Explanation:

• A. $\mathrm{\pi }$
• B. $\sqrt{2}$
• C. $\sqrt{11}$
• D. সবগুলো

Answer: Option D

Explanation:

• A. $xy$
• B. $\frac{1}{2}xy$
• C. $x^2+y^2$
• D. $\frac{1}{2}\left(x^2+y^2\right)$

Answer: Option B

Explanation:

• A. $6\sqrt{a^2}$
• B. $6a^2$
• C. $a^3$
• D. $6a$

Answer: Option B

Explanation:

• A. $n^2-1$
• B. $n^2$
• C. $n^2+1$
• D. $n^2+2$

Answer: Option B

Explanation:

• A. ১১ সেকেন্ড
• B. ১০ সেকেন্ড
• C. ১২ সেকেন্ড
• D. ১৫ সেকেন্ড

Answer: Option B

Explanation:

• A. $360°$
• B. $270°$
• C. $180°$
• D. $0°$

Answer: Option A

Explanation: