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Let there be fixed points on the circumference of a circle. Each of these points is joined to every one of the remaining points by a straight line and the points are so positioned on the circumference that at most straight lines meet in any interior point of the circle. The number of such interior intersection points is
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Important Questions on Permutations & Combinations
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The number of ways in which rings can be worn on the four fingers of one hand is
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With consonants and vowels the number of words of four letters that can be formed having two different vowels in the middle and one consonant, repeated or different at each end is
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In a class of students, there are girls. In how many different ways can all the students be arranged in a row such that no two of the three girls are consecutive
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The number of words that can be formed out of the letters of the word is
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In how many ways can prizes be distributed among boys when every boy can take one or more prizes?
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The number of ways in which distinct objects can be put into two different boxes so that no box remains empty is
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VITEEE
IMPORTANT
The number of ways of selecting exactly fruits out of apples, mangoes and oranges is
