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Earn 100
There are five types of envelopes and four types of stamps in the post office. How many ways are there to buy an envelope and a stamp?
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Important Questions on Permutations and Combinations
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In how many ways, can Ram choose a vowel and a consonant from the word ALLAHABAD?
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There are three rooms in a motel: one single, one double and one for four persons. How many ways are there to house seven persons in these rooms?
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How many ways are there to choose four cards of different suits and different values from a deck of cards?
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How many new words are possible from the letters of the word PERMUTATION?
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A set of fifteen different words are given. In how many ways, is it possible to choose a subset of not more than five words?
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In how many ways can papers can be arranged if the best and the worst paper never come together?
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In how many ways, can the letters of the word "EDUCATION" be arranged so that all the vowels come together?
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A man has shirts, trousers and ties. What are the number of ways in which he can dress himself with a combination of all the three?
