• A. 3
• B. 2
• C. - 1
• D. 1

Answer: Option D

Explanation:

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

Answer: Option B

Explanation:

• A. - 1
• B. 7
• C. 1
• D. - 7

Answer: Option B

Explanation:

• A. 5
• B. -5
• C. -35
• D. -55

Answer: Option A

Explanation:

• A. 10
• B. -10
• C. 45
• D. -45

Answer: Option A

Explanation:

• A. (6 - a)(4a - 1)
• B. (a - 6)(4a - 1)
• C. (a - 6)(4a + 1)
• D. (6 - a)(4a + 1)

Answer: Option D

Explanation:

• A. 00
• B. 10
• C. -10
• D. 20

Answer: Option B

Explanation:

• A. $4$
• B. $4i$
• C. $-4$
• D. $-4i$

Answer: Option C

Explanation:

• A. ০
• B. ১
• C. -১
• D. +১

Answer: Option C

Explanation:

• A. $-\frac{১}{৪}$
• B. ১
• C. $\frac{১}{৪}$
• D. $-\frac{৩}{৪}$

Answer: Option C

Explanation:

• A. 8
• B. 10
• C. 13
• D. 16

Answer: Option B

Explanation:

• A. {1,2,3}
• B. {2,3,4}
• C. {3,4,5}
• D. {2,3,4,5}

Answer: Option D

Explanation:

• A. .০০০০০২
• B. .০০০০০৫
• C. .০০০০০০১
• D. ১০০.০০

Answer: Option C

Explanation:

• A. ১.০০০১
• B. .১০০০১
• C. .০০০১
• D. .০০০০০১

Answer: Option D

Explanation:

• A. 0.000126
• B. 0.0001260
• C. 0.126000
• D. 0.00000126

Answer: Option D

Explanation: