# no. of non singular matrices

#### jacks

##### Well-known member
The no. of $3 \times 3$ non - singular matrices matrices, with four entries as $1$ and all other entries as $0$

#### Mr Fantastic

##### Member
The no. of $3 \times 3$ non - singular matrices matrices, with four entries as $1$ and all other entries as $0$
I assume the question is "Find the number of ....", in which case I suggest you count the number of ways you can make a singular matrix and then subtract this from the total number of all possible matrices.