Five digit numbers are formed using the digits $1, 2, 3, 4, 5, 6$ and $8$. What is the probability that they have even digits at both the ends

  • A

    $\frac{2}{7}$

  • B

    $\frac{3}{7}$

  • C

    $\frac{4}{7}$

  • D

    None of these

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