• A. $x<1,x>4$
• B. $x>1,x>4$
• C. $x<1,x<4$
• D. $1$

Answer: Option A

Explanation:

• A. 15 years
• B. 16 years
• C. 17 years
• D. 18 years

Answer: Option B

Explanation:

• A. 10
• B. 11
• C. 18
• D. 20

Answer: Option D

Explanation:

• A. $n^2$
• B. $\frac{n\left(n+1\right)}{2}$
• C. ${\left\{\frac{n\left(n+1\right)}{2}\right\}}^2$
• D. $\frac{n\left(n+1\right)\left(2n+1\right)}{6}$

Answer: Option D

Explanation:

• A. 90°
• B. 42°
• C. 45°
• D. 60°

Answer: Option A

Explanation:

• A. ৮
• B. ১২
• C. ১০
• D. ১৫

Answer: Option B

Explanation:

• A. ১০০
• B. ১২৫
• C. ১২০
• D. ১৫০

Answer: Option C

Explanation:

• A. $-\frac{5}{13}$
• B. $-\frac{13}{5}$
• C. $\frac{5}{13}$
• D. $\frac{13}{5}$

Answer: Option D

Explanation:

• A. $196$
• B. $194$
• C. $192$
• D. $198$

Answer: Option B

Explanation:

• A. $\sqrt{3}$
• B. $4\sqrt{3}$
• C. $8\sqrt{3}$
• D. $16\sqrt{3}$

Answer: Option C

Explanation:

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

Answer: Option D

Explanation:

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

Answer: Option A

Explanation:

• A. $-60$
• B. $-30$
• C. $30$
• D. $60$

Answer: Option B

Explanation:

• A. $\left(x^2-y^2\right)$
• B. $\left(x^{2}xy+y^2\right)$
• C. $x^3-y^3$
• D. $x+y$

Answer: Option A

Explanation:

• A. ১ টি
• B. ২ টি
• C. ৩ টি
• D. প্রান্তবিন্দু নেই

Answer: Option D

Explanation: