One hundred identical coins, each with probability 'p' of showing heads are tossed once. If `0 lt p lt 1` and the probability of heads showing on 50 coins is equal to that of heads showing on 51 coins, then the value of p is

Fird the probability of getting a head when a coin is tossed once. Also find the probability of getting a tail.

8 coins are tossed simultaneously ,what is the probability of getting 6 heads

If two fair coins are tossed together 5 times, then the probability of getting 5 heads and 5 tails is -

A fair coin is tossed n times. if the probability that head occurs 6 times is equal to the probability that head occurs 8 times, then find the value of ndot

A certain coin is tossed with probability of showing head being 'p' . Let 'q' denotes the probability that when the coin is tossed four times the number of heads obtained is even. Then (a) there is no value of p , if q=(1)/(4) (b) there is exactly two value of p , if q=(3)/(4) (c) there are exactly three value of p , if q=(3)/(5) (d) there are exactly four value of p , if q=(4)/(5)

Three coins are tossed together. Find the probability of getting at most two heads.

Six coins are tossed simultaneously. Find the probability of getting no head.

Six coins are tossed at a time. Find the probability of occring not more than 3 heads.

There are two coins, one unbiased with probability 1/2 of getting heads and the other one is biased with probability 3/4 of gatting heads. A coin is selected at random and tossed.It shows heads up. Then the probability that the unbiased coin was selected is-

A coin is tossed n times. The probability of getting head at least once is more than 0.8 , then the value of n is