$p=\ \left[\begin{matrix}2&5\\4&10\\\end{matrix}\right]$ হলে $p^{-1}= ?$

  $A = \left [ \begin{matrix} 7 & x \\ 2 & 10 \end{matrix} \right ] , B = \left [ \begin{matrix} 5 & 6 \\ - 7 & - 9 \end{matrix} \right ]$  

B^-1 = ?

For square matrices $A$ and $B$ of the same order, we have $adj (AB) = ?$

A একটি 4×4 ম্যাট্রিক্স |A|=64 হলে,  $\left \lvert \frac{A}{2} \right \rvert^{- 1}$  =?

If $A$ is a square matrix of order $m\times n$, then $adj(adj\space A)$ is equal to