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 [DCE 2002]

\[\frac{(2n!)}{{{(n!)}^{2}}}{{\left( \frac{1}{2} \right)}^{2n}}\]

\[1-\frac{(2n!)}{{{(n!)}^{2}}}\]

\[1-\frac{(2n!)}{{{(n!)}^{2}}}\,.\,\frac{1}{{{4}^{n}}}\]

A coin is tossed 2n times. The chance that the number of times one get

1.	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 [DCE 2002]
A.	\[\frac{(2n!)}{{{(n!)}^{2}}}{{\left( \frac{1}{2} \right)}^{2n}}\]
B.	\[1-\frac{(2n!)}{{{(n!)}^{2}}}\]
C.	\[1-\frac{(2n!)}{{{(n!)}^{2}}}\,.\,\frac{1}{{{4}^{n}}}\]
D.	None of these
Answer» D. None of these

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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 [DCE 2002]

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