There are 12 boys and 8 girls in a tuition centre. If three of them scored first mark, then what is the probability that…

A man and his wife appear in an interview for two vacancies in the same post. The probability two of husband’s sel…

Find the probability that in a random arrangement of the letters of the word 'UNIVERSITY' the two I's come together.

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 …

You toss a coin AND roll a die. What is the probability of getting a tail and a 4 on the die?

A box has 6 black, 4 red, 2 white and 3 blue shirts. What is the probability that 2 red shirts and 1 blue shirt get chos…

In which distribution successive trials are without replacement

On rolling a dice 2 times, the sum of 2 numbers that appear on the uppermost face is 8. What is the probability that the…