• A. $\frac{6}{7}$
• B. $\frac{7}{6}$
• C. $\frac{7}{4}$
• D. $\frac{7}{7}$

Answer: Option A

Explanation:

• A. 23
• B. 27
• C. 30
• D. 33

Answer: Option B

Explanation:

• A. 80
• B. 85
• C. 90
• D. 100

Answer: Option D

Explanation:

• A. 180
• B. 168
• C. 169
• D. 170

Answer: Option C

Explanation:

• A. 12
• B. 16
• C. 18
• D. 14

Answer: Option C

Explanation:

• A. 9
• B. 18
• C. 27
• D. 36

Answer: Option D

Explanation:

• A. $a+1$
• B. $a-1$
• C. $1$
• D. $a$

Answer: Option A

Explanation:

• A. $\left(0,0\right)$
• B. $\left(1,2\right)$
• C. $\left(2,1\right)$
• D. $\left(1,1\right)$

Answer: Option D

Explanation:

• A. $\left[\begin{array}{cc}1& 0\\ 0& 0\end{array}\right]$
• B. $\left[\begin{array}{cc}0& 0\\ 0& 0\end{array}\right]$
• C. $\left[\begin{array}{cc}1& 0\\ 0& 1\end{array}\right]$
• D. $\left[\begin{array}{cc}i& 0\\ 0& i\end{array}\right]$

Answer: Option B

Explanation:

• A. অভেদক ম্যাট্রিক্স
• B. প্রতিসম ম্যাট্রিক্স
• C. শূন্য ম্যাট্রিক্স
• D. কোনটিই নয়

Answer: Option B

Explanation:

• A. $\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• B. $\frac{1}{13}\left[\begin{array}{cc}44& -1\\ -31& 1\end{array}\right]$
• C. $\frac{1}{13}\left[\begin{array}{cc}-44& 1\\ 31& -1\end{array}\right]$
• D. $\frac{1}{13}\left[\begin{array}{cc}-31& 1\\ 44& -1\end{array}\right]$

Answer: Option B

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. $\left\{3,5,8\right\}$
• B. $\left\{4,57\right\}$
• C. $\left\{3,4,5\right\}$
• D. $\left\{3,5,7\right\}$

Answer: Option D

Explanation:

• A. 2
• B. 3
• C. 4
• D. 5

Answer: Option B

Explanation:

• A. $\left\{6,1\right\}$
• B. $\left\{-2,7\right\}$
• C. $\left\{2,7\right\}$
• D. $\left\{7\right\}$

Answer: Option D

Explanation: