Let $A$ be a matrix of order $2 \times 2$, whose entries are from the set $\{ 0,1,2,3,4,5 \}$. If the sum of all the entries of $A$ is a prime number $p , 2 < p < 8$, then the number of such matrices $A$ is
Let $A$ be a matrix of order $2 \times 2$, whose entries are from the set $\{ 0,1,2,3,4,5 \}$. If the sum of all the entries of $A$ is a prime number $p , 2 < p < 8$, then the number of such matrices $A$ is