The number of (3 \times 3) non-singular matrices, with four... | Mathematics | SolveeIt | Solveeit

Today, August 18

Question

The number of $3 \times 3$ non-singular matrices, with four entries as $1$ and all other entries as $0$ , is

A

5

B

6

C

at least 7

D

less than 4

Answer

at least 7

Explanation

Solution

First row with exactly one zero; total number of cases = 6 First row 2 zeros we get more cases Total we get more than 7.