• A. (–6, −12)
• B. (6,12)
• C. (-6,12)
• D. (6,-12)

Answer: Option C

Explanation:

• A. বাস্তব ও সমান
• B. বাস্তব ও অসমান
• C. অবাস্তব ও অসমান
• D. অবাস্তব ও সমান

Answer: Option C

Explanation:

• A. 2
• B. -1
• C. -3
• D. 1

Answer: Option C

Explanation:

• A. 6,2
• B. 6,-2
• C. -6,2
• D. -6,-2

Answer: Option B

Explanation:

• A. $\left(-2\sqrt{3},2\sqrt{3}\right)$
• B. $\left(-\infty ,-2\sqrt{3}\right)$
• C. $\left(-\infty ,-2\sqrt{3}\right)\cup \left(2\sqrt{3},\infty \right)$
• D. $\left(2\sqrt{3},\infty \right)$

Answer: Option C

Explanation:

• A. $\frac{1+\ln x}{1+\ln y}$
• B. $-\frac{1+\ln x}{1+\ln y}$
• C. $\frac{1-\ln x}{1+\ln y}$
• D. $\frac{1+\ln x}{1-\ln y}$

Answer: Option B

Explanation:

• A. $\frac{a-b}{1+ab}$
• B. $\frac{a+b}{1-ab}$
• C. $\frac{2ab}{1+ab}$
• D. $\frac{2ab}{1-ab}$

Answer: Option B

Explanation:

• A. $\frac{\pi }{4}$
• B. $\frac{\pi }{8}$
• C. ${\tan }^{-1}\frac{13}{16}$
• D. $\frac{1}{2}{\tan }^{-1}\frac{13}{16}$

Answer: Option A

Explanation:

• A. 1
• B. 2
• C. 3
• D. 4

Answer: Option A

Explanation:

• A. -1
• C. 1
• D. 2

Answer: Option C

Explanation:

• A. $\cot \frac{\sqrt{5}}{2}$
• B. ${\cot }^{-1}\frac{\sqrt{5}}{2}$
• C. $\tan \sqrt{5}$
• D. ${\tan }^{-1}\frac{1}{\sqrt{5}}$

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. 15
• B. 10
• C. 5
• D. 20

Answer: Option A

Explanation:

• A. 2
• B. 3
• C. 4
• D. 6

Answer: Option A

Explanation:

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

Answer: Option A

Explanation: