If an unbiased coin is tossed 7 times, find the probability of obtaining 4 'Hence and 3 'Tails'.

A coin is tossed 6 times. Find the probability of obtaining 4 heads.

A unbiased coin tossed three times. Find the probability of getting 1 head

An unbaised coin is tossed. Find the probability of getting a tail

A coin is tossed once. Find the probability of getting a tail.

An unbiased coin is tossed eight times. The probability of obtaining at least one head and at least one tail is :

An unbiased coin is tossed eight times. The probability of obtaining at least one head and at least one tail is :

A coin is biased so that the probability of falling head when tossed is (1)/(4) . If the coin is tossed 5 times , the probability of obtaining 2 heads and 3 tails is

An unbiased coin is tossed three times in succession. What is the probability of obtaining 'Tail' at least once ?