What will be the determinant of the following matrix
$[\begin{matrix} 2 & 3 a & c \end{matrix}]$

3a - 2c

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2c - 3a

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6 - ac

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ac - 6

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Solution

The correct option is B 2c - 3a
As explained to evaluate a 2 $\times$ 2 determinant we do criss-cross multiplication. First we will multiply 2 and c and then subtract the product of 3 and a from it so Answer will be 2c - 3a.

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