The element in the second row and third column of the matrix ⎡⎢⎣45−63−43210⎤⎥⎦ is:
If A=⎡⎢⎣012123234⎤⎥⎦ and B=⎡⎢⎣−1−2−102−1⎤⎥⎦, then what would be third element in the second column of matrix AB?