• A. 12π
• B. 10π
• C. 14π
• D. 7π

Answer: Option A

Explanation:

• A. $20 \mathrm{\pi }$
• B. $10 \mathrm{\pi }$
• C. $100 \mathrm{\pi }$
• D. $50 \mathrm{\pi }$

Answer: Option A

Explanation:

• A. $1.53 s$
• B. $2 s$
• C. $2.5 s$
• D. $2.25 s$

Answer: Option A

Explanation:

• A. $6\sqrt{3.6}$
• B. $6.6\sqrt{2}$
• C. $24.24\sqrt{3}$
• D. $24\sqrt{2.24}$

Answer: Option A

Explanation:

• A. 7N
• B. $\sqrt{13}\text{N}$
• C. $\sqrt{2}\text{N}$
• D. $\sqrt{3}\text{N}$

Answer: Option B

Explanation:

• A. $\frac{a+d}{b+c}$
• B. $\frac{b+c}{a+d}$
• C. $\frac{a+b}{c+d}$
• D. $\frac{c+d}{a+b}$

Answer: Option D

Explanation:

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

Answer: Option B

Explanation:

• A. $2$
• B. $7$
• C. $12$
• D. $35$

Answer: Option C

Explanation:

• A. ${}^{n}C_4$
• B. ${}^{n+1}C_4$
• C. ${}^{n+2}C_4$
• D. ${}^{n+2}C_3$

Answer: Option C

Explanation:

• A. ${}^{n}C_{r-n}$
• B. ${}^{n}C_{r+n}$
• C. ${}^{n}C_{n-r}$
• D. ${}^{n+1}C_n$

Answer: Option C

Explanation:

• A. -1
• B. 1
• C. $\omega$
• D. ${\omega }^2$

Answer: Option B

Explanation:

• A. $x^2-12=0$
• B. $x^2+12=0$
• C. $x^2-6=0$
• D. $x^2+6=0$

Answer: Option A

Explanation:

• A. বৃত্ত
• B. পরাবৃত্ত
• C. অধিবৃত্ত
• D. উপবৃত্ত

Answer: Option D

Explanation:

• A. 60π
• B. 10π
• C. π
• D. 4π

Answer: Option A

Explanation:

• A. $0$
• B. $-i$
• C. $-1$
• D. $1$

Answer: Option C

Explanation: