Let A be a 2 \times 2 matrix Statement - 1: {\adj}({\adj} A)=A Statement - 2:|{\adj} A|=|A| [AIEEE 2009]

Correct Answer is : statement −1 is true, statement −2 is true; statement - 2 is a correct explanation for statement −1.

statement -1 is true, statement - 2 is true; statement -2 is not a correct explanation for statement -1.

statement -1 is true, statement - 2 is false.

statement - 1 is false, statement -2 is true

statement -1 is true, statement -2 is true; statement - 2 is a correct explanation for statement -1.

AIEEE 2009 Solved Paper

Section: Mathematics

Question : 75 of 89

Marks: +1, -0

Let A be a 2×2 matrix
Statement - 1:adj(adj‌A)=A
Statement - 2:|adj‌A|=|A|

[AIEEE 2009]

statement −1 is true, statement - 2 is true; statement −2 is not a correct explanation for statement −1.
statement −1 is true, statement - 2 is false.
statement - 1 is false, statement −2 is true
statement −1 is true, statement −2 is true; statement - 2 is a correct explanation for statement −1.

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