There see three coins,one is a two headed coin (having head on both the faces),another is a biased coin that comes up heads 75% of the time and the third is anunbiased coin.One of the three coins is choosen at random and tossed.Of it shows head,what is probability that it was the two headed coin?

There are three coins. One of the two headed coin another is a biased coin that comes up heads 75% of the times and the third is also a biased coin tht comes up tails 40% of the times. One of the three coins is chosen at random and tossed, and it shows head. what is the probability that it is a two headed coin?

A coin is tossed once, what is the probability that one head occurs?

A coin is tossed twice, what is the probability that: no head occurs?

A coin is tossed 4 times. The probability that at least one head comes up is :

A coin is tossed twice, what is the probability that: one head and one tail occurs?

A coin is tossed 5 times. What is the probability of getting : no head.

A coin is tossed 5 times. What is the probability of getting : 3 heads?