Let A = a_ ij be a 3 × 3 matrix, where a_ ij = cases (-1)^ j-i , & ij cases then...

Question

Let A = a_ ij be a 3 × 3 matrix, where a_ ij = cases (-1)^ j-i , & i<j 2, & i=j (-1)^ i+j , & i>j cases then det(3Adj(2A^ -1 )) is equal to ____.

Accepted Answer

108

JEE Main 2021 Mathematics question