A bag contains $3$ red, $4$ white and $5$ blue balls. All balls are different. Two balls are drawn at random. The probability that they are of different colour is

  • A

    $\frac{{47}}{{66}}$

  • B

    $\frac{{10}}{{33}}$

  • C

    $\frac{5}{{22}}$

  • D

    None of these

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