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CBSE Notes 2011-2012 » XI-Maths

Probability-XI

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

Short answer question

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...

Short answer question

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.

Cards are numbered 1 to 25. Two cards are drawn one after the other. Find the probability that the n...

Short answer question

Cards are numbered 1 to 25. Two cards are drawn one after the other. Find the probability that the number on one card is a multiple of 7 and on the other it is a multiple of 11.

Two dice are thrown simultaneously. Find the probability of getting a multiple of 3 as the sum.

Short answer question

Two dice are thrown simultaneously. Find the probability of getting a multiple of 3 as the sum.

Find the probability of getting the sum as a prime number when two dice are thrown together.

Short answer question

Find the probability of getting the sum as a prime number when two dice are thrown together.

In a group of 10 outstanding slaidents in a school, there are 6 boys and 4 girls, 3 students are to ...

Short answer question

In a group of 10 outstanding slaidents in a school, there are 6 boys and 4 girls, 3 students are to be selected out of these at random for a debate competition. Find the probability that one is boy and 2 are girls.

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