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`        a fair coin is tossed 99 times of x is the number of heads occur.then p(x=r) is maximum when r is?`
7 years ago

28 Points
```										Dear Sri Valli,
Ans:- The no of head comes out to be r has the probability
P=nCr (1/2)^99
so it will be max or min accordingly as nCr is max or min. Thus it is max when r=(99+1)/2 or (99-1)/2
or   r=50 or 49(ans)

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Regards,
```
7 years ago
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