A coin is tossed n times. The probability of getting head at least once is more than 0.8 , then the value of n is

A coin is tossed n times. The probability of getting head atleast once is greater than 0.8. Then the least value of such n is

A coin is tossed n times. The probability of getting head atleast once is greater than 0.8. Then the least value of such n is

A fair coin is tossed n times. The probability of getting head at least once is greater than 0.8. Then the least value of n is -

A coin is tossed n xx.The probability of getting head at least once is greater than 0.8. Then the least value of n is

A coin is tossed 2n times. The probability of getting head n times, is -

A coin is tossed n times. The probability of getting exactly six heads in

A coin is tossed 8 times . The probability of getting a head three times is :

An unbiased coin is tossed n times. If the probability of getting atleast one head is greater than 0.8, then the least value of n is