• A. $\frac{n-1}{n+1}$
• B. $\frac{2n}{n+1}$
• C. $\frac{1}{n}$
• D. $\frac{n}{n+1}$

Answer: Option D

Explanation:

• A. 5
• B. 6
• C. 3
• D. 4

Answer: Option B

Explanation:

• A. $2+\sqrt{3}$
• B. $\frac{1}{2+\sqrt{3}}$
• C. $\frac{1}{2-\sqrt{3}}$
• D. $\frac{1}{5}$

Answer: Option C

Explanation:

• A. $\left\{x\in \mathrm{ℝ}:x\ge \frac{1}{4}\right\}$
• B. $\left\{x\in \mathrm{ℝ}:x\le \frac{1}{4}\right\}$
• C. $\left\{x\in \mathrm{ℝ}:x<\frac{1}{4}\right\}$
• D. $\left\{x\in \mathrm{ℝ}:x\ge 4\right\}$

Answer: Option A

Explanation:

• A. ৪০০০
• B. ২০০০
• C. ১৬০০
• D. ৮০০

Answer: Option A

Explanation:

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

Answer: Option D

Explanation:

• A. 45
• B. 47
• C. 49
• D. 51

Answer: Option B

Explanation:

• A. $\frac{1}{6}$
• B. $\frac{1}{3}$
• C. $\frac{1}{2}$
• D. 1

Answer: Option C

Explanation:

• A. 32
• B. 30
• C. 34
• D. 28

Answer: Option A

Explanation:

• A. a > c
• B. a > e
• C. c > e
• D. c < e
• E. None

Answer: Option C

Explanation:

• A. $\left(x^2-4\right)\left(x^2-4\right)$
• B. (x+4) (x-4)
• C. (x+2) (x-2)
• D. $\left(x^2+16\right)\left(x^2-16\right)$

Answer: Option B

Explanation:

• A. 12
• B. 15
• C. 17
• D. 20

Answer: Option C

Explanation:

• A. 2b
• C. 8a
• D. 6b

Answer: Option B

Explanation:

• A. $\frac{z}{3}$
• B. $\frac{2z}{3}$
• C. $\frac{z}{2}$
• D. $\frac{x+y}{2}$

Answer: Option B

Explanation:

• A. ১৮০°
• B. ১৫০°
• C. ২৭০°
• D. ৩৬০°

Answer: Option D

Explanation: