• A. 3x+5y
• B. 3x-5y
• C. $9x^2-25y^2$
• D. $5a\left(9x^2-25y^2\right)$

Answer: Option D

Explanation:

• A. (3x +1) (3x +4)
• B. (3 + x ) ( 3x -4)
• C. (3x + 1 ) (3x -4)
• D. (3x +1) (4x +3)3

Answer: Option C

Explanation:

• A. (3x+1)
• B. (3x-4)
• C. (3x+4)
• D. কোনোটিই নয়

Answer: Option B

Explanation:

• A. -2
• B. 2
• C. 3

Answer: Option D

Explanation:

• A. $\left\{x+iy\right\}$
• B. $\left\{x+iy;x,y\in R\right\}$
• C. $\left\{2i, 3i.....\right\}$
• D. $\left\{i, \pm 3i,2\right\}$

Answer: Option B

Explanation:

• A. উপসেট
• B. অসীম সেট
• C. ফাঁকা সেট
• D. শক্তিসেট

Answer: Option C

Explanation:

• A. উপসেট
• B. অসীম সেট
• C. ফাঁকা সেট
• D. শক্তিসেট

Answer: Option C

Explanation:

• A. $90°$
• B. $120°$
• C. $105°$
• D. $160°$

Answer: Option C

Explanation:

• A. $45°$
• B. $22.5°$
• C. $30°$
• D. $60°$

Answer: Option C

Explanation:

• A. $110°$
• B. $100°$
• C. $90°$
• D. $80°$

Answer: Option A

Explanation:

• A. -9ayz
• B. 9ayz
• C. $-9a{y}^{2}z$
• D. $9a^{2}y{z}^2$

Answer: Option D

Explanation:

• A. $36°$
• B. $18°$
• C. $54°$
• D. $45°$

Answer: Option C

Explanation:

• A. $60°$
• B. $45°$
• C. $40°$
• D. $30°$

Answer: Option D

Explanation:

• A. 40°
• B. 120°
• C. 140°
• D. 180°

Answer: Option C

Explanation:

• 
• A. 90 °
• B. 120 °
• C. 180 °
• D. 360 °

Answer: Option C

Explanation: