• A. $\frac{15}{19}$
• B. $\frac{13}{17}$
• C. $\frac{11}{15}$
• D. $\frac{9}{13}$

Answer: Option B

Explanation:

• A. 63
• B. 36
• C. 35
• D. 53

Answer: Option B

Explanation:

• A. $\frac{2}{7}$
• B. $\frac{1}{8}$
• C. $\frac{3}{8}$
• D. $\frac{3}{5}$

Answer: Option C

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. $\frac{{\left(a+b\right)}^2}{2}-\frac{{\left(a-b\right)}^2}{2}$
• D. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$

Answer: Option A

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. $\frac{{\left(a+b\right)}^2}{2}-\frac{{\left(a-b\right)}^2}{2}$
• D. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$

Answer: Option A

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. $\frac{{\left(a+b\right)}^2}{2}-\frac{{\left(a-b\right)}^2}{2}$
• D. ${\left(a+b\right)}^2+{\left(a-b\right)}^2$

Answer: Option A

Explanation:

• A. $3$
• B. $4$
• C. $5$
• D. $6$

Answer: Option D

Explanation:

• 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. $\frac{1}{2}\left(x-4\right)\left(x+2\right)$
• B. $\frac{1}{2}\left(x+4\right)\left(x-2\right)$
• C. $\frac{1}{2}\left(x+4\right)\left(x+2\right)$
• D. $\frac{1}{2}\left(x-4\right)\left(x-2\right)$

Answer: Option D

Explanation:

• A. $\frac{1}{30}$
• B. $\frac{1}{60}$
• C. $\frac{1}{15}$
• D. কোনোটিই নয়

Answer: Option C

Explanation:

• A. π ঘন মি.
• B. $\frac{\mathrm{\pi }}{3}$ঘন মি.
• C. $\frac{\mathrm{\pi }}{9}$ঘন মি.
• D. $\frac{\mathrm{\pi }}{27}$ঘন মি.

Answer: Option D

Explanation:

• A. 25
• B. 27
• C. 30
• D. 32

Answer: Option B

Explanation:

• A. $30$
• B. $15$
• C. $45$
• D. $60$

Answer: Option A

Explanation:

• A. 45
• B. 81
• C. 90
• D. 135

Answer: Option D

Explanation:

• A. 45
• B. 81
• C. 90
• D. 135

Answer: Option D

Explanation: