• 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: