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Matrices and Determinants question

2021 · 25 Feb · Shift 2 · Q32

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JEE Main
Mathematics
Matrices and Determinants
2021 · 25 Feb · Shift 2 · Q32

Matrices and Determinants question

2021 · 25 Feb · Shift 2 · Q32

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1

Let A be a 3

\times

3 matrix with det(A) = 4. Let Ri denote the ith row of A. If a matrix B is obtained by performing the operation R2

\to

2R2 + 5R3 on 2A, then det(B) is equal to :

A
64
B
16
C
128
D
80

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