A coin is tossed twice. What is the probability that atleast one tail occurs?

A coin is tossed twice. What is the probability that at least one tail occurs?

A coin is tossed 5 times What is the probability of getting at least 3 heads?

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

If a fair coin is tossed 10 times, what is the probability that the outcome is exactly 6 heads ?

A coin is tossed 6 times,What is the probability of getting exactly 4 heads.

Three coins are tossed once. Find the probability of getting atleast one head.

A coin is tossed so that the head is 3 times as likely to occur as tail. If the coin is tossed twice, Find the probability distribution of number of tails.

Three coins are tossed once. Find the probability of getting atleast two heads.