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CBSE Notes 2011-2012 » XI-Maths

# Probability-XI

## From a well-shuffled pack of 52 cards, a card is drawn at random. Find the probability that either i...

From a well-shuffled pack of 52 cards, a card is drawn at random. Find the probability that either it is an ace of red colour or a card of black colour.

## A committee of 5 Principals is to be selected from a group of 6 Gent Principals and 8 Lady Principal...

A committee of 5 Principals is to be selected from a group of 6 Gent Principals and 8 Lady Principals. If the selection is made randomly, find the probability that there are 3 Lady Principals and 2 Gent Principals.

## In a class of 25 students with ro ll numbers 1 to 25, a student is picked up at random to answer a q...

In a class of 25 students with ro ll numbers 1 to 25, a student is picked up at random to answer a question. Find the probability that the rol 1 number of the selected student is either a multiple of 5 or 7.

## One card is drawn from a set of 17 cards numbered 1 to 17. Find the probability that the number is d...

One card is drawn from a set of 17 cards numbered 1 to 17. Find the probability that the number is divisible by 3 or 7.