In a pub there are 5 couples. Out of them 5 people are chosen at random. Find the probability that there are at least two couples?

PROBABILITY :

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Two 6 faced dice are thrown together.  The probability that

The two show the same number on them is _____

PROBABILITY :

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Two 6 faced dice are thrown together.  The probability that

The two dice should not show the same number on them is _________.

PROBABILITY :

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Two 6 faced dice are thrown together.  The probability that

Both should show even number on them is _________.

PROBABILITY :

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A bag contains 3 white balls, 4 black, 6 brown balls and 2 orange balls.

If four balls are picked at random, what is the probability that none is white?

PROBABILITY :

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A bag contains 3 white balls, 4 black, 6 brown balls and 2 orange balls.

If three balls are picked at random, what is the probability that they are all white?

PROBABILITY :

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A bag contains 3 white balls, 4 black, 6 brown balls and 2 orange balls.

If two balls are picked at random, what is the probability that they are either white or orange ?

PROBABILITY :

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A bag contains 3 white balls, 4 black, 6 brown balls and 2 orange balls.

If two balls are drawn at random, what is the probability that at least one is brown?

PROBABILITY :

These questions are based on the following data.

A bag contains 3 white balls, 4 black, 6 brown balls and 2 orange balls.

If three balls are drawn what is the probability that one is orange and two are black?

PROBABILITY :

A box contains six black marbles and five orange marbles. Two marbles are picked at random from the box. What is the probability that they both are different colour?

PROBABILITY :

Out of 30 consecutive numbers, 5 are chosen at random.  The probability that all are odds or primes is ________.