A=\left| \begin{array}{ccc}{25} & {27} & {29} \\ {10} & {12} & {14} \\ – InterviewSolution

1.	A=\left\| \begin{array}{ccc}{25} & {27} & {29} \\ {10} & {12} & {14} \\ {30} & {32} & {34}\end{array}\right\|
Answer» \|A\| = 25(34×12-14×32) - 27(10×34-14×30) + 29(32×10-12×30) = 25(0) - 27(340-420) + 29(320-360) = -27(-80) + 29(-40) = 2160 - 1160 = 1000

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