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

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 twice, what is the probability that at least one tail occurs?

The minimum number of times a fair coin needs to be tossed, so that the probability of getting at least two heads is at least 0.96 is :

A coin is tossed four times. The probability that atleast one heads turns up is

The minimum number of tosses of a pair of dice so that the probability of getting the sum of the digits on the dice equal to 7 on atleast one toss is greater than 0.95, is, then (n+1)/6 is

A fair coin is tossed four times and a person win R1 for each head and lose R1.50 for each tail that turns up. From the sample space calculate how many different amounts of money you can have after four tosses and the probability of having each of the amounts.

Nine balanced coins tossed together once. Find probability of getting at least 6 heads.

If three coins are tossed simultaneously then write their outcomes. a) All possible outcomes b) Number of possible outcomes c) Find the probability of getting at least one head (getting one or more than one head) d) Find the Probability of getting at most two heads (getting Two or less than two heads) e) Find the Probability of getting no tails

A coin is tossed three times. Find the probability of receiving head more times than tail.

If a fair coin is tossed 10 times, find the probability of i) exactly 2 heads ii) at least 9 heads