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Match List - I with List - II. If A=∣3−2321−14−32∣A = \begin{vmatrix} 3 & -2 & 3 \\ 2 & 1 & -1 \\ 4 & -3 & 2 \end{vmatrix}

List - IList - II
(A) M23M_{23}(I) −17-17
(B) A32+a13A_{32} + a_{13}(II) −1-1
(C) A(III) 0
(D) a13A12+a23A22+a33A32a_{13}A_{12} + a_{23}A_{22} + a_{33}A_{32}(IV) 12

Choose the correct answer from the options given below :

Solution

✅ Correct Option: 2

M23=∣3−24−3∣=−1M_{23} = \begin{vmatrix} 3 & -2 \\ 4 & -3 \end{vmatrix} = -1 (II).

A32=−∣332−1∣=9A_{32} = -\begin{vmatrix} 3 & 3 \\ 2 & -1 \end{vmatrix} = 9, a13=3a_{13}=3, sum =12= 12 (IV).

∣A∣=3(−1)−(−2)(8)+3(−10)=−17|A| = 3(-1) - (-2)(8) + 3(-10) = -17 (I).

Mixed cofactor sum =0= 0 (III).

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