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The number of 3xx3 non - singular matr...

The number of `3xx3 ` non - singular matrices , with four entries as 1 and all other entries as 0 , is :

A

5

B

6

C

atleast 7

D

less then 4

Text Solution

Verified by Experts

The correct Answer is:
C
First row with exactly one zero
`therefore ` Total number of cases = 6
First row 2 zeroes, we get more cases.
`therefore ` Total we get more then 7.
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