• A. 15
• B. 17
• C. 19
• D. 21

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. n^2
• B. 3(n-1)+3
• C. 2n+2
• D. 2n+3

Answer: Option D

Explanation:

• A. n²
• B. 5(n+2)
• C. 2n+2
• D. 7n+3

Answer: Option D

Explanation:

• A. 22
• B. 25
• C. 23
• D. 27

Answer: Option C

Explanation:

• A. $3\sqrt{5}$
• B. $5\sqrt{3}$
• C. $5$
• D. $2\sqrt{5}$

Answer: Option A

Explanation:

• A. $a+b=1$
• B. $a-b=1$
• C. $a=b$
• D. $a^2-b^2=1$

Answer: Option A

Explanation:

• A. 0.1
• B. 0.01
• C. 0.001
• D. 0.0001

Answer: Option D

Explanation:

• A. 0.1
• B. 0.01
• C. 0.001
• D. 0.0001

Answer: Option C

Explanation:

• A. 0.1
• B. 0.01
• C. $110000$
• D. $0.001$

Answer: Option A

Explanation:

• A. 28
• B. -44
• C. 32
• D. 26

Answer: Option A

Explanation:

• A. $a^2+b^2$
• B. $a^2-b^2$
• C. $2a^2+2b^2$
• D. $2a^2-2b^2$

Answer: Option C

Explanation:

• A. 27
• B. 24
• C. 22
• D. 20

Answer: Option C

Explanation:

• A. 4x
• B. 9x
• C. 6x
• D. 3x

Answer: Option D

Explanation:

• A. 5/-3
• B. 17/3
• C. 5/3
• D. 7/13

Answer: Option B

Explanation: