Three coins are tossed. If one of them shows tail, then find the probability that all three coins show tail.

If a fair coin is tossed thrice find the probability that there are at most one tail

There are three coins. One is two headed coin, another is a biased coin that comes up head 75% of the time and third is an unbiased coin. One of the three coins is chosen at random and tossed. If it shows head, what is the probability that it was the two headed coin ?

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

If four unbiased coins are tossed, find the probability that there should be two talls.

4 coins are tossed at a time. What is the probability that there are 2 heads and 2 tails?

A coin is tossed and a dice is rolled. Find the probability that the coin shows the head and the dice shows 6.

There are three coins, One is two headed coin, another is a biased coin that comes up head 75% of the time and thrid is an unbaised coin. One of the three coins is chosen at random and tossed. If its hows head, what is the probability that it was the two headed coin?

If 3 unbiased coins are tossed simultaneously describe the sample space and find the probability that at most one head comes.

A box contains N coins, m of wiich are fair and the rest are biased. The probability of getting a head when a fair coin is tossed is 1/2, while it is 2/3 when a biased coin is tossed. A coin is drawn from the box at random and is tossed twice. The first time it shows head and the second time it shows tail. What is the probability that the coin drawn is fair ?

A coin is tossed twice, what is the probability that atleast one tail occurs?