• A. $x^2+\frac{1}{x^2}$
• B. $1+\frac{1}{x^2}$
• C. $x+\frac{1}{x}$
• D. $x^2+1$

Answer: Option C

Explanation:

• A. $-5,1$
• B. $2,3$
• C. $-2,3$
• D. $1,-5$

Answer: Option B

Explanation:

• A. $\frac{a}{b}$
• B. $\log k\frac{a}{b}$
• C. $\log k\frac{b}{c}$
• D. $0$

Answer: Option D

Explanation:

• A. ২১
• B. ২২
• C. ২০
• D. ২৩

Answer: Option B

Explanation:

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

Answer: Option B

Explanation:

• A. ২০
• B. ২২
• C. ২১
• D. ২৪

Answer: Option C

Explanation:

• A. ২৫
• B. ২৯
• C. ৩১
• D. ৩৭

Answer: Option C

Explanation:

• A. $\frac{5}{12}$
• B. $\frac{12}{5}$
• C. $\frac{13}{5}$
• D. $\frac{5}{13}$

Answer: Option C

Explanation:

• A. $x={\log }_{b}N$
• B. $x={\log }_{b}b$
• C. $x=Nb$
• D. $x=N^b$

Answer: Option A

Explanation:

• A. $1$
• B. $0$
• C. $2$
• D. $10$

Answer: Option C

Explanation:

• A. $-1$
• B. $1$
• C. $-2$
• D. $2$

Answer: Option D

Explanation:

• A. 55 log3
• B. 120 log3
• C. 155 lgo3
• D. 180 log3

Answer: Option B

Explanation:

• A. $9$
• B. $27$
• C. $18$
• D. $81$

Answer: Option B

Explanation:

• A. log 256
• B. log 128
• C. log 64
• D. log 32

Answer: Option A

Explanation:

• A. ৬৬
• B. ৪৯
• C. ৩৬
• D. ৩৪

Answer: Option C

Explanation: