Practice Crash Course - GATE & ESE - EE, EC Offered by Unacademy

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Crash Course

Quick practice

Question 1 of 5

Let S = {AX : A = $\left[\begin{array}{cc} 2 & -4 \\ 1 & 1 \\ 1 & -1 \end{array}\right]$ and X = ______.

A

4

B

-4

C

-2

D

2