• A. $\frac{180}{\mathrm{\pi }}$
• B. $\mathrm{\pi }$
• C. $\frac{\mathrm{\pi }}{180}$
• D. $2\mathrm{\pi }$

Answer: Option C

Explanation:

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

Answer: Option B

Explanation:

• A. 0.01111
• B. 1.1111
• C. 1.10111
• D. 11.1101

Answer: Option B

Explanation:

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

Answer: Option D

Explanation:

• A. নবম
• B. দশম
• C. একাদশ
• D. সপ্তম

Answer: Option A

Explanation:

• A. x = 1
• B. x = -1/2
• C. x = 2
• D. x = -2

Answer: Option D

Explanation:

• B. 1
• C. [1 + (-1)n]
• D. 1/2 [ 1 - (-1)n]

Answer: Option D

Explanation:

• A. - 1
• B. 1
• D. কোনটিই নয়

Answer: Option B

Explanation:

• A. 4a - 1
• B. 1
• C. a

Answer: Option D

Explanation:

• A. 33/31
• B. 63/32
• C. 63/64
• D. 127/64

Answer: Option D

Explanation:

• A. 3n - 3
• B. 4n - 3
• C. 4n + 1
• D. 4n - 1

Answer: Option B

Explanation:

• A. 21
• B. 861
• C. 840
• D. 860

Answer: Option B

Explanation:

• A. 2n - 12
• B. n(n + 1)2
• C. n2
• D. {n(n + 1)22}

Answer: Option C

Explanation:

• A. 180
• B. 184
• C. 188
• D. 190

Answer: Option D

Explanation:

• A. 233
• B. 99
• C. 160
• D. 80

Answer: Option A

Explanation: