• A. ৩৮ বছর
• B. ৪২ বছর
• C. ২৭ বছর
• D. ৩০ বছর

Answer: Option D

Explanation:

• A. ± 4
• B. ± 8
• C. ± 12
• D. ± 16

Answer: Option D

Explanation:

• A. ৩৯
• B. ৯৩
• C. ৩১
• D. ১৩

Answer: Option B

Explanation:

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option C

Explanation:

• A. ৫/৩
• B. ৩/৫
• C. ৪/৩
• D. ৪/৫

Answer: Option B

Explanation:

• A. ৭
• B. ৩৪৩
• C. ৭৭
• D. ৪৯

Answer: Option D

Explanation:

• A. -1
• B. 1
• C. $\frac{1}{2}$

Answer: Option B

Explanation:

• A. {a, b}
• B. {a, -b}
• C. {-a, b}
• D. {-a, -b}

Answer: Option A

Explanation:

• A. 0°
• B. 30°
• C. 45°
• D. 90°

Answer: Option D

Explanation:

• A. $\frac{x^2-y^2}{xy}$
• B. $\frac{2x^2-y^2}{xy}$
• C. $\frac{y^2-x^2}{xy}$
• D. $\frac{x^2-2y^2}{xy}$

Answer: Option C

Explanation:

• A. -1
• C. 1
• D. 2

Answer: Option A

Explanation:

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

Answer: Option C

Explanation:

• A. 7
• B. 1
• C. $\frac{3}{5}$
• D. $\frac{1}{3}$

Answer: Option A

Explanation:

• A. ০.৯
• B. ০.০৯
• C. ০.০১
• D. ০.৯৯

Answer: Option D

Explanation:

• A. $\frac{-9}{5}$
• B. $\frac{9}{5}$
• C. $\frac{7}{5}$
• D. $-\frac{7}{5}$

Answer: Option B

Explanation: