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Recent questions in Permutations and Combinations

Questions >> JEEMAIN and NEET >> Mathematics >> Class11 >> Permutations and Combinations

There are two urns. Urn A has 3 distinct red balls and Urn B has 9 distinct blue balls. From each urn two balls are drawn at random and then transfered to other. The no. of ways in which this can be done is?

asked Aug 9, 2013 by rvidyagovindarajan_1

1 answer

A student is to answer $10$ questions out of $13$ in an examination, so that he must choose at least $4$ from first $5$ questions. The no. of choices available to him is ?

asked Aug 8, 2013 by rvidyagovindarajan_1

1 answer

The smallest positive natural number $n$ such that $n!$ is divisible by $990$ is ?

asked Aug 8, 2013 by rvidyagovindarajan_1

1 answer

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