The probability of obtaining exactly `r` heads and `(n-r)` tails, when we toss `n` unbiased coins is

The probability of getting exactly 2 heads when tossing 7 coins is

The probability of obtaining 4 heads,4 tailswhen 8 unbiased coins are tossed is

Using binomial distribution find the probability of obtaining "less than 3 heads" when an unbiased coin is tossed 6 times.

The probability of getting exactly two heads when tossing a coin three times is

The probability of getting exactly two heads when tossing a coin three times is

The probability of getting exactly two heads when tossing a coin three times is

The probability of getting exactly two heads when tossing a coin three times is

Write the probability of getting exactly two heads in a single toss of two unbiased coins.

The probability of getting exactly two heads when tossing a coin three xx is