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Matrices and Determinants question

2023 · 12 Apr · Shift 1 · Q24
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Matrices and Determinants question

2023 · 12 Apr · Shift 1 · Q24

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
Let A=[115101]A=\left[\begin{array}{cc}1 & \frac{1}{51} \\ 0 & 1\end{array}\right]A=[10​511​1​]. If B=[12−1−1]A[−1−211]\mathrm{B}=\left[\begin{array}{cc}1 & 2 \\ -1 & -1\end{array}\right] A\left[\begin{array}{cc}-1 & -2 \\ 1 & 1\end{array}\right]B=[1−1​2−1​]A[−11​−21​], then the sum of all the elements of the matrix ∑n=150Bn\sum_{n=1}^{50} B^{n}∑n=150​Bn is equal to
  1. A
    50
  2. B
    75
  3. C
    100
  4. D
    125
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