Answer:
8
Step-by-step explanation:
[tex]A= \begin{bmatrix} 2 & 6 & 9\\3 & 4 &1\\7&7&8\end{bmatrix} [/tex]
[tex] A_{3,\: 3} [/tex] means the element of the matrix present at the point of intersection of third row and third column which is 8.
[tex] \therefore A_{3,\: 3}= \boxed{8} [/tex]
