Question

Let A be a 2 × 2 matrix

Statement-1: adj(adj A)= A

Statement-2: |adj A| = |A| 

(A) Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1.

(B) Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.

(C) Statement-1 is true, Statement-2 is false.

(D) Statement-1 is false, Statement-2 is true.

Answer 1

Answer is (B) Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.

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