Let I3 be the Identity matrix of order 3 then (I3)^-1 is equal to _________(a) 0(b) 3I3(c) I3(d) None of the mentionedThis question was posed to me at a job interview.I want to ask this question from Inverse of Matrices in chapter Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Let I3 be the Identity matrix of order 3 then (I3)^-1 is equal to ____

1.	Let I3 be the Identity matrix of order 3 then (I3)^-1 is equal to _________(a) 0(b) 3I3(c) I3(d) None of the mentionedThis question was posed to me at a job interview.I want to ask this question from Inverse of Matrices in chapter Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics
Answer» The correct option is (c) I3 The EXPLANATION: IDENITY matrices are self invertible that is I3 X I3 = I3.

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