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If A is a square matrix such that A^2=A ...

If `A` is a square matrix such that `A^2=A` then `det A=`

A

0 or l

B

-2 or 2

C

-3 or 3

D

none of these

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The correct Answer is:
A
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HIMALAYA PUBLICATION-MATRICES AND DETERMINANTS-QUESTION BANK
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