• A. $\sqrt{21}N$
• B. $\sqrt{19}N$
• C. $\sqrt{13}N$
• D. $\sqrt{23}N$

Answer: Option C

Explanation:

• A. 5
• B. -5
• C. 6
• D. -6

Answer: Option A

Explanation:

• A. -1
• B. 1
• D. 2

Answer: Option C

Explanation:

• A. $\frac{\mathrm{\pi }}{2}$
• B. $\frac{\mathrm{\pi }}{8}$
• C. $\frac{\mathrm{\pi }}{6}$
• D. $\frac{\mathrm{\pi }}{4}$

Answer: Option B

Explanation:

• A. -2
• B. - 2x
• C. π - 2x
• D. 4 - 4x

Answer: Option B

Explanation:

• A. 16
• B. -18
• C. -16
• D. 18

Answer: Option A

Explanation:

• A. $2$
• B. $3$
• C. $4$
• D. $\sqrt{5}$

Answer: Option C

Explanation:

• A. $0$
• B. $\sqrt{2}$
• C. $2\sqrt{5}$
• D. $6$

Answer: Option C

Explanation:

• A. $3$
• B. $\frac{1}{3}$
• C. $6$
• D. $\frac{1}{6}$

Answer: Option B

Explanation:

• A. $0$
• B. $-i$
• C. $-1$
• D. $1$

Answer: Option A

Explanation:

• A. $7$
• B. $\frac{1}{7}$
• C. $-\frac{1}{7}$
• D. $-7$

Answer: Option C

Explanation:

• A. $10$
• B. $1$
• C. $4$
• D. $6$

Answer: Option B

Explanation:

• A. $x^2+2x+2=0$
• B. $x^2-2x+2=0$
• C. $x^2-2x-2=0$
• D. $x^2+2x-2=0$

Answer: Option B

Explanation:

• A. ${\tan }^{-1}\frac{2}{11}$
• B. ${\tan }^{-1}\frac{32}{11}$
• C. ${\tan }^{-1}\frac{11}{2}$
• D. $-{\tan }^{-1}\frac{2}{11}$

Answer: Option C

Explanation:

• A. $\frac{1}{x}$
• B. $\frac{1}{x}{\log }_{10}e$
• C. $\frac{1}{x}\log 10$
• D. ${\log }_{10}e$

Answer: Option B

Explanation: