• A. $9$
• B. $16$
• C. $27$
• D. $64$

Answer: Option D

Explanation:

• A. 4
• B. 3
• C. 2
• D. 1

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $\frac{2}{5}$
• B. $\frac{5}{2}$
• C. $\frac{7}{4}$
• D. $\frac{11}{2}$

Answer: Option B

Explanation:

• A. $a>0,a\not\equiv 1$
• B. $a<0,a\not\equiv 1$
• C. $a>1,a\not\equiv 0$
• D. $a<1,av0$

Answer: Option A

Explanation:

• A. $\frac{1}{25}$
• B. $-5$
• C. $\frac{1}{5}$
• D. $-\frac{1}{5}$

Answer: Option B

Explanation:

• A. $4$
• B. $2$
• C. $-2$
• D. $-4$

Answer: Option A

Explanation:

• A. $\ln x$
• B. $\ln 2x$
• C. $x^2$
• D. $2x$

Answer: Option C

Explanation:

• A. $3$
• B. $4$
• C. $5$
• D. $8$

Answer: Option B

Explanation:

• A. $x>0gএবংx=not1$
• B. $x\ge 0gএবংx=not1$
• C. $x>0gঅথবাx=not1$
• D. $x\ge 0gঅথবাx=not1$

Answer: Option C

Explanation:

• A. $\log a^m-\log a^n$
• B. $\log a^m+\log a^n$
• C. $\log a^m\times \log a^n$
• D. $কোনোটিই নয়$

Answer: Option A

Explanation:

• A. $3$
• B. $-3$
• C. $\frac{1}{3}$
• D. $-\frac{1}{3}$

Answer: Option B

Explanation:

• A. ১৩
• B. ১৬
• C. ১৯
• D. ২১

Answer: Option A

Explanation:

• A. $9$
• B. $8$
• C. $6$
• D. $4$

Answer: Option B

Explanation:

• A. x = log b N
• B. x = log b b
• C. x = N b
• D. x = N b

Answer: Option A

Explanation: