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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 `49 , 50` b. `50 , 51` c. `51 , 52` d. n

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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 49,50 b. 50,51 c. 51,52 d. none of these A. 49,50 B. 50,51 C. 51,52 D. none of these Select the correct answer from above options

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Correct Answer - A Here, n=99,p=1/2 . Therefore ,(n+1)p=50 So, P(X=r) is maximum when r=50orr=49 .

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