Question

The number of all possible matrix of order 3 x 3 with each entry '0' are '1' is

Answer 1

solution:

1 or 0

it can be filled in two ways. And there are 9 place as it is a 3*3 matrix.

Thus the total no. of ways of filling all the entries are 2*2*2*2*2*2*2*2*2=512