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Question: For a matrix A of order 2 × 2. If (adj. A) = \(\begin{bmatrix} 10 & 0 \\ 0 & 10 \end{bmatrix}\) then...

For a matrix A of order 2 × 2. If (adj. A) = [100010]\begin{bmatrix} 10 & 0 \\ 0 & 10 \end{bmatrix} then

|A| =

A

100

B

20

C

0

D

10

Answer

10

Explanation

Solution

|adj A| = 100

In two order det. |adj A| = |A| = 100