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CUET · MATHS · PYQ PAPER 2023

Match List - I with List - II. If \(A=\left|\begin{array}{ccc}3 & -2 & 3 \\ 2 & 1 & -1 \\ 4 & -3 & 2\end{array}\right|\)
List - IList - II
(A) \(M_{23}\)(I) -17
(B) \(A_{32}+a_{13}\)(II) -1
(C) \(A\) (Determinant value)(III) 0
(D) \(a_{13} A_{12}+a_{23} A_{22}+a_{33} A_{32}\)(IV) 12
Choose the correct answer from the options given below :

  1. A \((A)-(I I),(B)-(I),(C)-(I V),(D)-(I I I)\)
  2. B \((A)-(I I),(B)-(I V),(C)-(I),(D)-(I I I)\)
  3. C \((A)-(I),(B)-(I I),(C)-(I I I),(D)-(I V)\)
  4. D \((A)-(I I I),(B)-(I V),(C)-(I I),(D)-(I)\)
Verified Solution

Answer & Solution

Correct Answer

(B) \((A)-(I I),(B)-(I V),(C)-(I),(D)-(I I I)\)

Step-by-step Solution

Detailed explanation

\((A)\) \(M_{23} = \left|\begin{array}{cc}3 & -2 \\ 4 & -3\end{array}\right| = (3)(-3) - (-2)(4) = -9+8 = -1\) \((B)\) \(a_{13}=3\) \(M_{32} = \left|\begin{array}{cc}3 & 3 \\ 2 & -1\end{array}\right| = (3)(-1) - (3)(2) = -3-6 = -9\) \(A_{32} = (-1)^{3+2} M_{32} = (-1)(-9) = 9\)…