If the matrix AB is zero, then

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It is not necessary that either A = O or, B = O

A =O or B=O

A =O and B =O

all the above statements are wrong

answer is A.

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Detailed Solution

If A=1 00 0,B=0 00 1, then AB=0 00 0However, A≠O,B≠O So, option (a) is correct

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