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In a third order matrix A, a(ij) denotes...

In a third order matrix A, `a_(ij)` denotes the element in the i-th row and j-th column. If `{:(a_(ij)=0" for " i=j),(=1" for "igtj),(=-1" for "iltj):}` then the matrix is

A

skew symmetric

B

symmetric

C

not invertible

D

non-singular

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The correct Answer is:
A, C
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