A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If three marbles are drawn what is the proba…

A bag contains 7 green and 5 black balls. Three balls are drawn one after the other. The probability of all three balls …

In a race, the odd favour of cars P, Q, R, S are 1 : 3, 1 : 4, 1 : 5 and 1 : 6 respectively. Find the probability that o…

In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is …

Two dice are thrown simultaneously. What is the probability of getting the sum of the face number is at least 10?

If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -

Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a…

From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?