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The cofactor of the element 4 in the det...

The cofactor of the element 4 in the determinant `|{:(1,2,3),(4,5,6),(7,8,9):}|`.

A

2

B

4

C

6

D

-6

Text Solution

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The correct Answer is:
C
Co-factor of `4=(-1)^(3)(2 xx 9 - 3 xx 8) = -(-6)=6`
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