NCERT Solutions
Class 12 - Mathematics Part-1 - Chapter 3: MATRICES
Exercise 3.4

Question. 1

Matrices \(A\) and \(B\) will be inverse of each other only if

(A) \(AB = BA\)

(B) \(AB = BA = 0\)

(C) \(AB = 0,\; BA = I\)

(D) \(AB = BA = I\)

Answer:

(D)