In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a priz…

The mean of binomial distribution is

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…

One card is drawn from a pack of 52 cards. What is the probability that the card drawn is either a red card or a king ?

The probability that a number selected at random from the first 50 natural numbers is a composite number is -

A special lottery is to be held to select a student who will live in the only deluxe room in a hostel. There are 100 Yea…

The odds against an event are 5 : 3 and the odds in favour of another independent event are 7 : 5. Find the probability …

In a simultaneous throw of two dice, what is the probability of getting a doublet ?