Multiple Choice Questions on Given matrix A find the value of 5A ........ for NDA Exam Preparation

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Multiple Choice Questions

Given matrix A find the value of 5A ........

Mathematics (NDA) Matrices and Determinants
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    Given matrix A=\begin{bmatrix} 1 & 2 & 0\\ -1 & 6 & 1\\ 2 & 0 & 2 \end{bmatrix}, find the value of | 5A|?

    100

    Correct Answer

    50

    Incorrect Answer

    40

    Incorrect Answer

    60

    Incorrect Answer
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    Explanation:

    The determinant of matrix a \begin{bmatrix} 1 & 2 & 0\\ -1 & 6 & 1\\ 2 & 0 & 2 \end{bmatrix}

    1(12-0) -2(-2-2)+0()=20

        Using properties k|A|

        20× 5=100

    By: bhavesh kumar singh
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