UPSC NDA II 2010 Mathematics Paper

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Question : 113 of 120

Marks: +1, -0

If
A=[

0	1
−1	0

],B=[

i	0
0	−i‌end‌array

],C=[begin‌array‌cc‌0,−i;−i,0]
then which one of the following is not correct?

A2=B2
B2=C2
AB=C
AB=BA

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