How many dice must be thrown so that there is a better than even chance of obtaining a six?

A card is drawn and replaced in an ordinary pack of 52 cards. How many times must a card be drawn so that there is at least an even chance of drawing a heart.

Eight coin are thrown simultaneously. Find the chance of obtaining at least six heads.

Eight coin are thrown simultaneously.Find the chance of obtaining at least six heads.

A fair dice is thrown once. What is the probability that either on even number or a number greater than three will turn up?

Two unbiased six faced dice are thrown. The probability that the sum of the numbers on faces of them is a prime number greater than 5 is

Two different dice are thrown together.Find the probability that the numbers obtained have (i) even sum,and (ii) even product.

Two different dice are thrown together. Find the probability that the number obtained have i] even sum ii] even product

Two dices are thrown simultaneously. What is the probability of not getting two sixes?

Two different dice are thrown together. Find the probability that the numbers obtained have (i) even sum (ii) even product.

Two dice are thrown simultaneously. If X denotes the numbers of sixes obtained, find probability distribution of X and also is mean and variance.