ProbabilityHard
Question
One hundred Identical coins each with probability P of showing up heads are tossed once. It 0 < P < 1 and probability of heads showing on 50 coins is equal that of heads showing on 51 coins, then the value of P is :-
Options
A.
B.
C.
D.
Solution
100C50 P50 q50 = 100C51 P51 q49
(where q = 1 - P)
⇒ P = 
(where q = 1 - P)
⇒ P = Create a free account to view solution
View Solution FreeMore Probability Questions
There are two urns. There are m white & n black balls in the first urn and p white & q black balls in the second urn. On...A letter is taken out at random from ′ASSISTANT′ and another is taken out from ′STATISTICS′. The...The probability of occurring of two events A and B are 0.21 and 0.49 respectively and of occurring both simultaneously i...A bag contains 4 red and 6 black balls. A ball is drawn at random from the bag, its colour is observed and this ball alo...A number is chosen at random from the numbers 10 to 99. A number whose product of digits is 12 will be called a good num...