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

Answer: Option D

Explanation:

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

Answer: Option C

Explanation:

• A. 8
• B. 7
• C. 6
• D. 3

Answer: Option A

Explanation:

• A. $\left\{7,9\right\}$
• B. $\left\{9\right\}$
• C. $\left\{7\right\}$
• D. $\theta$

Answer: Option C

Explanation:

• A. $9$
• B. $12$
• C. $3$
• D. $4$

Answer: Option A

Explanation:

• A. π
• B. 2π
• C. $\frac{2\mathrm{\pi }}{3}$

Answer: Option D

Explanation:

• A. 9
• B. $9^x-1$
• C. $9^x+1$
• D. $9^{x-1}$

Answer: Option C

Explanation:

• A. 12
• B. 9
• C. 7
• D. 6

Answer: Option A

Explanation:

• A. $45\sqrt{5}$
• B. $47\sqrt{6}$
• C. $46\sqrt{5}$
• D. $43\sqrt{5}$

Answer: Option C

Explanation:

• A. $\left[\begin{array}{ccc}5& 5& 1\\ 4& 2& 2\\ 1& 6& 6\end{array}\right]$
• B. $\left[\begin{array}{ccc}1& 5& 1\\ 4& -2& 2\\ 1& 6& 2\end{array}\right]$
• C. $\left[\begin{array}{ccc}1& 3& -1\\ 4& 0& 2\\ 1& 6& 4\end{array}\right]$
• D. $\left[\begin{array}{ccc}1& 3& -1\\ 2& -2& 0\\ -1& 4& 2\end{array}\right]$

Answer: Option B

Explanation:

• A. $5$
• B. $8$
• C. $10$
• D. $11$

Answer: Option D

Explanation:

• A. $2$
• B. $\frac{2}{\sqrt{3}}$
• C. $4$
• D. $2\sqrt{3}$

Answer: Option D

Explanation:

• A. 3
• B. 6
• C. 9
• D. 27

Answer: Option D

Explanation:

• A. a+b
• B. ab
• C. $\frac{a}{b}$
• D. $\frac{b}{a}$

Answer: Option A

Explanation:

• A. 9
• B. 12
• C. 3
• D. 4

Answer: Option A

Explanation: