A card is drawn from a pack of cards.What is the probability that it is a card of black suit?
There are 26 cards of black suits
Total=52
No of events=26
Probability=26/52=1/2
A box contains 4 red balls,5 green balls and 6 white balls.A ball is drawn at random.Find the probability that the ball drawn is either red or green?
An unbiased die is thrown.Find the probability of getting a multiple of 3
In a throw of a coin,find the probability of getting a head.
A bag contains 7 white and 9 black balls.Two balls are drawn in succession at random.What is the probability that one of them is white and the other black?
A bag contains 2 red,3 green and 2 blue balls,two balls are drawn at random.What is the probability that none of the drawn balls are blue?