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UPSC NDA II 2023 Mathematics Solved Paper

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Question : 8

Total: 120

If A=[

0	3	4
−3	0	5
−4	−5	0

], then which one of the following statements is correct?

A2 is symmetric matrix with det(A2)=0.
A2 is symmetric matrix with det(A2)≠0.
. A2 is skew-symmetric matrix with det(A2)=0.
A2 is skew-symmetric matrix with det(A2)≠0.

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