RD Sharma - Mathematics (Volume 2)

Book: RD Sharma - Mathematics (Volume 2)

Chapter: 33. Binomial Distribution

Subject: Maths - Class 12th

Q. No. 10 of MCQ

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Mark the correct alternative in the following:

A fair coin is tossed 99 times. If X is the number of times heads occur, then P(X = r) is maximum when r is




P(x=r)= nCr pr qn-r

P(x=r)= nCr pn

nCr =

Its maximum value is closest near n/2

Since n is an odd number, so it have two values:


S0, r= 49,50

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