MHT CET20225 Aug 2022Morning ShiftMathematicsMatricesActual

The element in the third row and second column of the inverse of the matrix [ array ccc 3 & 2 & 6 1 & 1 & 2 2 & 2 & 5 array ] is

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Correct answer

B. -2

Step-by-step solution

The element of third row and second column of inverse of a matrix = Cofactor of second row and third column of the matrix Determinant of the matrix aligned & = -(3 2-2 2) 3(1 5-2 2)+2(2 2-1 5)+6(1 2-2 1) & = -2 3-2+0 & =-2 aligned

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