• A. $40$
• B. $36$
• C. $32$
• D. $30$

Answer: Option B

Explanation:

• A. $\frac{3}{8}$
• B. $\frac{27}{8}$
• C. $\frac{2}{8}$
• D. $\frac{27}{4}$

Answer: Option A

Explanation:

• B. 1
• C. 2
• D. $\infty$

Answer: Option B

Explanation:

• A. 12
• B. 16
• C. 8
• D. 4

Answer: Option C

Explanation:

• A. 8
• B. 12
• C. 16
• D. 18

Answer: Option A

Explanation:

• A. 16a = 40b
• B. 40a = 16b
• C. ab = 40 ´ 16
• D. ab = 640

Answer: Option B

Explanation:

• A. 4 : 3 : 2
• B. 6 : 7 : 8
• C. 8 : 7 : 6
• D. 2 : 3 : 4

Answer: Option D

Explanation:

• B. 2
• C. 4
• D. 1

Answer: Option D

Explanation:

• A. $-\sin \sqrt{x}$
• B. $\frac{-\sin \sqrt{x}}{2\sqrt{x}}$
• C. $\frac{-\sin \sqrt{x}}{\sqrt{x}}$
• D. $\frac{\sin \sqrt{x}}{2\sqrt{x}}$

Answer: Option B

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:

• A. LDA
• B. IN
• C. ADD
• D. OUT

Answer: Option A

Explanation:

• A. $-15$
• B. $14$
• C. $-14$
• D. $15$

Answer: Option D

Explanation:

• A. $\frac{৫}{৩}$
• B. $\frac{২}{৩}$
• C. $\frac{৩}{৫}$
• D. $\frac{৫}{৭}$

Answer: Option A

Explanation:

• A. $\frac{5}{3}$
• B. $\frac{2}{3}$
• C. $\frac{3}{5}$
• D. $\frac{5}{7}$

Answer: Option A

Explanation:

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

Answer: Option B

Explanation: