How many times must a man toss a fair com so that the probability of having at least one head is more than 90%?

How many times must a man toss a fair coin, so that the probability of having at least one head is more than 80%?

How many times a fair coin must be tossed, so that the probabillity of getting at least one tail is more than 90 %

The probability of a man hitting a target is 1/2. How many times must he fire so that the probability of hitting the target at least once is more than 90 %dot

The minimum number of times one has to toss a fair coin so that the probability of observing atleast one head is atlest 90% is

The probability of a man hitting a target is 1/4. How many times must he fire so that the probability of his hitting the target at lest once is greater than 2/3?

A coin is tossed 4 times . The probability of getting atleast one head is

Minimum number of times a fair coin must be tossed so that the probility of gettig atleast one head is more than 99% is

The probability of a shooter hitting a target is 3/4 . How many minimum number of times must he/she fire so that the probability of hitting the target at least once is more than 0.99?

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 at least 3 heads.