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

Answer: Option C

Explanation:

• A. ১২৫
• B. ৬২৫
• C. ৫
• D. ২৫

Answer: Option B

Explanation:

• A. 2
• B. -2
• C. ০
• D. 1

Answer: Option A

Explanation:

• A. 60 ডিগ্রী
• B. 75ডিগ্রী
• C. 30ডিগ্রী
• D. 45ডিগ্রী

Answer: Option D

Explanation:

• A. $\frac{1}{3}$
• B. $\frac{3}{6}$
• C. $\frac{2}{7}$
• D. $\frac{5}{21}$

Answer: Option D

Explanation:

• A. $\frac{১}{১০০০০০}$
• B. $\frac{১}{১০০০০}$
• C. $\frac{১}{১০০০}$
• D. $\frac{১}{১০০০০০০}$

Answer: Option D

Explanation:

• A. $\frac{৪}{৭}$
• B. $\frac{৫}{৮}$
• C. $\frac{৭}{১১}$
• D. $\frac{২}{৩}$

Answer: Option D

Explanation:

• A. 1
• B. 64
• C. 19
• D. 55

Answer: Option D

Explanation:

• A. 1
• B. 3
• C. 12
• D. 15

Answer: Option D

Explanation:

• A. 3
• B. 8
• C. 9
• D. 10

Answer: Option C

Explanation:

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

Answer: Option B

Explanation:

• A. $\frac{৯}{১০০}$
• B. $\frac{৯}{১০০০}$
• C. $০.০০৯৯$
• D. $০.১০০$

Answer: Option D

Explanation:

• A. $\frac{২০}{৪১}$
• B. $\frac{২০}{৩৯}$
• C. $\frac{৪০}{৪১}$
• D. $\frac{৪০}{৩৯}$

Answer: Option B

Explanation:

• A. $\frac{\mathrm{\pi }}{4}$
• B. $\frac{\mathrm{\pi }}{2}$
• C. $\frac{\mathrm{\pi }}{3}$
• D. $\frac{2\mathrm{\pi }}{3}$

Answer: Option A

Explanation: