Test Index

UPSC NDA II 2024 Mathematics Paper

Question Numbers: 49-50

Direction : Consider the following for the items that follow :

Let

A = \begin{bmatrix} 3 & -3 & 4 \\ \text{ 2} & -3 & 4 \\ \text{ 0} & -1 & 1 \end{bmatrix}

Question : 49 of 120

Marks: +1, -0

What is A(adj A) equal to?

$\begin{bmatrix} 5 & 0 & 0 \\ \text{ 0} & 5 & 0 \\ \text{ 0} & 0 & 5 \end{bmatrix}$
$\begin{bmatrix} 2 & 0 & 0 \\ \text{ 0} & 2 & 0 \\ \text{ 0} & 0 & 2 \end{bmatrix}$
$\begin{bmatrix} \frac{1}{2} & 0 & 0 \\ \text{ 0} & \frac{1}{2} & 0 \\ \text{ 0} & 0 & \frac{1}{2} \end{bmatrix}$
$\begin{bmatrix} 1 & 0 & 0 \\ \text{ 0} & 1 & 0 \\ \text{ 0} & 0 & 1 \end{bmatrix}$

Go to Question:

Prev Question

Next Question