The probability of success of three students X,Y and Z in the one examination are $$\frac{{1}}{{5}}$$, $$\frac{{1}}{{4}}…

A box contains 3 blue marbles, 4 red, 6 green marbles and 2 yellow marbles. If two marbles are drawn at random, what is …

A basket contains 6 blue, 2 red,4 green and 3 yellow balls. If four balls are picked up at random, what is the probabili…

In which distribution successive trials are without replacement

From a pack of cards two cards are drawn one after the other, with replacement. The probability that the first is a red …

If two dice are thrown together, the probability of getting an even number on one die and an odd number on the other is …

If a card is drawn from a well shuffled pack of cards, the probability of drawing a spade or a king is -

The successive trials are with replacement in