• A. 21
• B. 10
• C. 9
• D. 3

Answer: Option D

Explanation:

• A. 1
• C. 2
• D. 4

Answer: Option A

Explanation:

• A. ১.৩৫
• B. ১.৪০
• C. ১.২৫
• D. ১.৩০

Answer: Option C

Explanation:

• A. 1/2
• B. 1/4
• C. 1/5
• D. 1/7

Answer: Option B

Explanation:

• A. 120°
• B. 180°
• C. 90°
• D. কোনো নির্দিষ্ট মান নেই

Answer: Option B

Explanation:

• A. 185
• B. 156
• C. 250
• D. 320

Answer: Option B

Explanation:

• A. 3
• B. 7
• C. 10
• D. 36

Answer: Option B

Explanation:

• A. $\left(\sqrt{2}x+5\right)\left(2x^2-5\sqrt{2}x-25\right)$
• B. $\left(\sqrt{2}x+5\right)\left(2x^2-5\sqrt{2}x+25\right)$
• C. $\left(\sqrt{2}x+5\right)\left(2x^2+5\sqrt{2}x-25\right)$
• D. $\left(\sqrt{2}x-5\right)\left(2x^2+5\sqrt{2}x+25\right)$

Answer: Option B

Explanation:

• A. 4
• B. 5
• C. 9
• D. 22

Answer: Option D

Explanation:

• A. 4
• B. 6
• C. 9
• D. 12

Answer: Option D

Explanation:

• A. 13
• B. 17
• C. 19
• D. 21

Answer: Option A

Explanation:

• A. No solution
• B. Exactly 1
• C. Exactly 2
• D. Infinitely many

Answer: Option A

Explanation:

• A. 2xy
• B. $2y^2$
• C. 1
• D. -1

Answer: Option C

Explanation:

• A. ২৫°
• B. ৩৫°
• C. ৯০°
• D. ১১৫°

Answer: Option A

Explanation:

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

Answer: Option A

Explanation: