The unbiased dice is tossed until a number greater than 4 appear. What is the probability that an even number of tosses is needed?

A die is rolled. If the outcome is an even number, what is the probability that it is a prime number ?

A man throws a die until he gets a number greater than 3 . The probability that he gets 5 in the last throw

A fair coin is tossed until one of the two sides occurs twice in a row. The probability that the number of tosses required is even is

A die is rolled. What is the probability that the number appearing on upperface is less than 3?

Suppose we throw a die once. (1) What is the probability of getting a number greater than 4? (in) What is the probability of getting a number less than or equal to 4?

A biased coin with probability p(0 lt plt 1) of falling tails is tossed until a tail appears for the first time. If the probability that tail comes in odd number of trials is (2)/(3) , then p equals

A six faced fair dice is thrown until 2 comes, then the probability that 2 comes in even number of trials is (dice having six faces numbered 1,2,3,4,5 and 6 )

An unbiased die is thrown. What is the probability of getting (i) an even number or a multiple of 3 . (ii) a number between 3 and 6.

Three coins are tossed. Find the probability that tail does not appear.