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The value of the cofactor of the element of second row and third column in the matrix [4 3 2; 2 −1 0; 1 2 3] is :
If aᵢⱼ and Aᵢⱼ represent the (ij)th element and its cofactor of [2 -3 5; 6 0 4; 1 5 -7] respectively, then the value of a₁₁ A₂₁ + a₁₂ A₂₂ + a₁₃ A₂₃ is :
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