A card is drawn from well shuffled deck of 52 cards. Find the probability that the card will not be an ace

A box contains cards marked with numbers 5 to 20. A card is drawn from the box at random. Find the probability of getting a number which is perfect square .

Find the probability of selecting a red pen from a box containing 30 black pens, 20 blue pens and 15 red pens.

A card is drawn at random from a well shuffled pack of 52 playing cards. Find the probability that the drawn card is neither a king nor a queen.

A box contains 20 balls, bearing numbers 1,2,3,4,...20. A ball is drawn at random from the box. What is the probability that the number on the ball is divisible by 2 or 3

A box contains 20 balls, bearing numbers 1,2,3,4,...20. A ball is drawn at random from the box. What is the probability that the number on the ball is a prime number

A box contains 20 balls, bearing numbers 1,2,3,4,...20. A ball is drawn at random from the box. What is the probability that the number on the ball is not divisible by 10

A box contains 60 discs which are numbered from 1 to 60. If one disc is drawn at random from the box, find the probability that it bears a two digit number

In the leap year, find the probability that there are 53 tuesdays in the year

From a pack of 52 cards, jacks, queens, kings and aces are removed. From the remaining , a card is drawn at random. Find the probability that the card drawn is a red card.