60 shirts of different colours are on sale. If one shirt is chosen at random
what is the probability that it is small, given that it is blue ?

60 shirts of different colours are on sale. If one shirt is chosen at random what is the probability that it is red ?

60 shirts of different colours are on sale. If one shirt is chosen at random what is the probability that it is plain and extra-large ?

60 shirts of different colours are on sale. If one shirt is chosen at random if A is the event 'the shirt is medium' and B is the event 'the shirt is blue'. Are the events A and B independent ?

A box contains beads of different colors There are total 200 beads in it One bead is taken at random The probability that it is blue is 0.98 Then, a) How many blue beads are there in the box? b) Some blue beads are removed from the box Now probability of blue bead becomes 0.96 So how many blue beads are removed?

Suppose that 5 men out of 100 and 25 women out of thousand are colour blind.A colour blind person is chosen at random.What is the probability of this being male (assuming that males and females are in equal proportion).

An urn contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the urn and then a ball is drawn at random. What is the probability that the second ball is red?

A word consists of 9 letters, 5 consonants and 4 vowels. Three letters are chosen at random. What is the probability that more than one vowel will be selected?

cards marked with numbers 2 to 105 are placed in a box and mixed. one card is chosen at random. The probability that the number on the card is less than 15 is

There are 18 balls numbered from 1 to 19 in a bag.If a person selects one at random what is the probability that the number printed on the ball be an even number greater than 9?