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Determinants


The cofactor of the element '4' in the determinant





1351234280110211





is
Options:
A. 4
B. -10
C. 10
D. -4

 Next Question
Answer: Option C
: C

The cofactor of element 4, in the 2nd row and 3rd column is
=(1)2+3∣ ∣131801021∣ ∣ = - {1(-2)-3(8-0)+1.16}
=10.

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