286 .  নিচের শূণ্যস্থানে কোন সংখ্যাটি বসবে? ৫, ১৩, ৭, ১৫, ৯, ১৭, ১১--

• A. ১৩
• B. ১৯
• C. ২০
• D. ২১

Answer: Option B

Explanation:

• A. $4$
• B. $27\sqrt{3}$
• C. $8$
• D. $\frac{1}{8}$

Answer: Option C

Explanation:

• B. 1
• C. -1
• D. 4

Answer: Option A

Explanation:

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

Answer: Option D

Explanation:

• A. 2
• B. 3
• C. -2
• D. -3

Answer: Option C

Explanation:

• A. $\frac{1}{2}$
• B. $\frac{1}{4}$
• C. $-\frac{1}{2}$
• D. $-\frac{1}{4}$

Answer: Option D

Explanation:

• A. 1
• B. 4
• C. 2
• D. 5

Answer: Option B

Explanation:

• A. 4
• B. 8
• C. 5
• D. 7

Answer: Option B

Explanation:

• A. $-81$
• B. $81$
• C. $\pm 81$
• D. $\pm 27$

Answer: Option B

Explanation:

• A. $0.01$
• B. $0.001$
• C. $0.05$
• D. $0.005$

Answer: Option A

Explanation:

• A. $1,0$
• B. $1,10$
• C. $1,100$
• D. $10,100$

Answer: Option C

Explanation:

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

Answer: Option D

Explanation:

• A. 8
• B. 3
• C. 5
• D. 4

Answer: Option D

Explanation:

• A. ${16}^x$
• B. $4^{4x}$
• C. $2^{2x+2}$
• D. $2^{8x}$

Answer: Option C

Explanation:

• A. $8$
• B. $5$
• C. $4$
• D. $3$

Answer: Option C

Explanation: