$A$ coin is tossed $2n$ times. The chance that the number of times one gets head is not equal to the number of times one gets tail is

  • A
    $\frac{(2n)!}{(n!)^2} \left( \frac{1}{2} \right)^{2n}$
  • B
    $1 - \frac{(2n)!}{(n!)^2}$
  • C
    $1 - \frac{(2n)!}{(n!)^2} \cdot \frac{1}{4^n}$
  • D
    None of these

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