Question Library

Find the probability of getting an even number in a single throw of a six-sided die.

If the probability of death is q and the probability of survival is p, find the probability of one death and one survival in an accident involving two persons

Two fair dice are tossed together once. Find the probability that the sum of the outcomes is at least 10.

From a box containing 2 red, 6 white, and 5 black balls, a ball is randomly selected. What is the probability that the selected ball is black?

a. A pack of 52 playing cards is shuffled, and a card is drawn at random. Calculate the probability that it is either a five or a red nine. [Hint: There are 4 fives and 2 red nines in a pack of 52 cards] b. P, Q, and R are points in the same horizontal plane. The bearing of Q from P is 150º, and the bearing of R from Q is 060º. If |PQ| = 5 m and |QR| = 3 m, find the bearing of R from P, correct to the nearest degree.

A bag contains 7 red and 4 black identical balls. Two balls were picked at random from the bag and replaced each time. Find the probability the two balls were of same colour.

A coin is thrown 3 times. What is the probability that atleast one head is obtained?

A bag contains 8 red balls and some white balls. If the probability of drawing a white ball is half of the probability of drawing a red ball then find the probability of drawing a red ball and a white ball if the balls are drawn without replacement.

Two dice are tossed. What is the probability that the total score is a prime number.

A number is chosen at random from 40 and 50 inclusive. Find the probability that the number is prime.

If a fair coin is tossed twice, what is the probability of obtaining at least one head?

Mrs Gabriel is pregnant. The probability that she will give birth to a girl is 1/2 and with blue eyes is 1/4. What is the probability that she will give birth to a girl with blue eyes?

Find the probability that a number selected at random from 41 to 56 is a multiple of 9

A fair die is tossed twice what is the probability of get a sum of at least 10.

A box contains 2 white and 3 blue identical balls. If two balls are picked at random from the box, one after the other with replacement, what is the probability that they are of different colours?