• A. 10
• B. 20
• D. 30

Answer: Option D

Explanation:

• A. π
• B. 1
• D. -1

Answer: Option C

Explanation:

• A. -1
• B. 1
• D. 2

Answer: Option A

Explanation:

• A. 0°
• B. 30°
• C. 45°
• D. 60°

Answer: Option B

Explanation:

• A. -2i,1
• B. -2i, 1
• C. 2i,1
• D. -2i,-2

Answer: Option A

Explanation:

• A. $\pm \frac{4}{3}$
• B. $\pm 12$
• C. $\pm 8$
• D. $\pm 7$

Answer: Option C

Explanation:

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

Answer: Option D

Explanation:

• A. 2x+1=0
• B. 2x+y=0
• C. x+y=0
• D. x+2y=0

Answer: Option D

Explanation:

• A. 6
• B. 8
• C. 10
• D. 12

Answer: Option A

Explanation:

• A. -1
• B. 2
• C. -3
• D. 3

Answer: Option D

Explanation:

• A. 30°
• B. 75°
• C. 105°
• D. 135°

Answer: Option D

Explanation:

• A. 1
• C. -1
• D. কোন মান নেই

Answer: Option D

Explanation:

• A. অভেদক ম্যাট্রিক্স
• B. প্রতিসম ম্যাট্রিক্স
• C. শূন্য ম্যাট্রিক্স
• D. কোনটিই নয়

Answer: Option B

Explanation:

• A. 11
• B. 13
• C. 14
• D. 15

Answer: Option B

Explanation:

• A. $x=\omega$
• B. $x=1$
• C. $x=0$
• D. $x={\omega }^2$

Answer: Option B

Explanation: