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If A is a square matrix of order ‘n’ and I is the unit matrix of the same order, then AI is equal to

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Question:

If A is a square matrix of order ‘n’ and I is the unit matrix of the same order, then AI is equal to

A.

a

B.

ia

C.

i

D.

both (a) & (b)

Answer» d. both (a) & (b)

Note: The above multiple-choice question is for all general and Competitive Exams in India.