• 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. $\frac{1}{b}-\frac{1}{a}$
• B. $\frac{1}{a}-\frac{1}{b}$
• C. $\frac{1}{a}+\frac{1}{b}$
• D. $-\frac{1}{a}-\frac{1}{b}$

Answer: Option A

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. $\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• B. $\frac{1}{13}\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• C. $\frac{1}{13}\left[\begin{array}{cc}-44& 1\\ 31& -1\end{array}\right]$
• D. $\frac{1}{13}\left[\begin{array}{cc}-31& 1\\ 44& -1\end{array}\right]$

Answer: Option B

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. অন্তঃকেন্দ্র
• B. পরিকেন্দ্র
• C. লম্বকেন্দ্র
• D. ভরকেন্দ্র

Answer: Option B

Explanation:

• A. সরল বেখা
• B. পরাবৃত্ত
• C. উপবৃত্ত
• D. অধিবৃত্ত

Answer: Option B

Explanation:

• A. 25 কি.মি/ঘ
• B. 30 কি.মি/ঘ
• C. 40 কি.মি/ঘ
• D. 58 কি.মি/ঘ

Answer: Option A

Explanation:

• A. 45
• B. 15
• C. 105
• D. কোনটিই নয়

Answer: Option D

Explanation:

• A. 360
• B. 670
• C. 680
• D. 390

Answer: Option D

Explanation:

• A. 101
• B. 105
• C. 99
• D. 103

Answer: Option D

Explanation: