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NEW JOYTHI PUBLICATION-PERMUTATIONS AND COMBINATIONS-QUESTIONS FROM COMPETITIVE EXAMS
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- The number of ways in which a 7 people can sit around a round table is
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- There are (n + 1) white and (n + 1) black balls, each set numbered 1 t...
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- The number of four-digit even numbers that can be formed using 0, 1, 2...
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- The number of circular permutations of n different objects is
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- The number of ways in which 5 boys and 3 girls be seated in a row so t...
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- If n and r are two positive integers such that nger,"then "^(n)C(r-1)+...
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- If ""^(4)C(r)=""^(4)C(r+1), then the value of r is
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- The number of straight lines that can be formed by joining 20 points o...
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- The number of ways in which a committee of 6 members can be formed fro...
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- Evaluate the following: ""^(20)C(4)=
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- Let N be the number of quadratic equations with coefficients from {0, ...
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- If ""^(n)C(3)=220, then n = ?
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- A polygon has 54 diagonals. Number of sides of this polygon is
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- In how many ways can 8 students be arranged in a row?
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- The number of different permutations of the word word 'BANANA' is
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- Rank of the word " MOTHER " is
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- Six X's have to be placed in the squares of the figure below, such tha...
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- A student is to answer 10 out of 13 questions in an examination such t...
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