MatricesHard

Question

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

Options

A.5
B.6
C.at least 7
D.less than 4

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.

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