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The number of 3 3 non-singular matrices...

The number of 3 3 non-singular matrices, with four entries as 1 and all other entries as 0, is (1) 5 (2) 6 (3) at least 7 (4) less than 4

A

Less then 4

B

5

C

6

D

at least 7

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The correct Answer is:
D
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