In how many different ways can the letters of the word ‘CURIOES’ be arranged in such a way that the vowels occupy only the odd positions?
In how many different ways can the letter of the word CHESTNUT is arranged so that vowels always occur together?
How many straight lines can be formed from 9 points out of which 4 are colinear?
A committee of 4 members is to be formed from 5 men and 4 women such that at least one woman is included. In how many ways can this be done?
- Seven people are to be arranged on seven chairs. Among them, there are three friends who should not sit together. Find the number of valid arrangements.
- Six students are to be seated in a row. Four of them are boys and the rest are girls. In how many ways can they be arranged such that the two girls do not ...
In how ways can the selection be made so that a particular member is always excluded?
- Seven books out of which 4 are novels and rest are comics have to be arranged on a shelf. Find the number of ways of arrangement in which all four novels a...
Five students are to be arranged on five chairs for a photograph. Three of these are girls and the rest are boys. Find out the total number of ways in w...
In how ways can the selection be made so that a particular member is always excluded?
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