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Find the number of diagonals of a : pent...

Find the number of diagonals of a : pentagon .

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MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. How many triangles can be drawn through n points on a circle ?

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  2. A polygon has 44 diagonals, find the number of its sides.

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  3. Find the number of diagonals of a : pentagon .

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  4. Find the number of diagonals of a : octagon .

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  5. If there are 12 persons in a party, and if each two of them shake hand...

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  6. In a student's reunion meeting in a school, 16 students show up. Each ...

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  7. How many different committees, each consisting of 3 girls and 2 boys c...

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  8. In how many ways can a team of 3 boys and 3 girls be selected from 5 b...

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  9. Find the number of ways of selecting 9 balls from 6 red balls, 5 white...

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  10. A bookshelf contains 7 different Mathematics textbooks and 5 different...

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  11. A boy has 3 library tickets and 8 books of his interest in the library...

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  12. Out of 7 consonants and 4 vowels, how many words can be made each cont...

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  13. In how many ways can a student choose a programme of 5 courses if 9 co...

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  14. In an examination, a student has to answer 4 questions out of 5 questi...

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  15. In an examination, Yamini has to select 4 questions from each part. Th...

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  16. If 20 lines are drawn in a plane such that no two of them are parallel...

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  17. There are 15 points in a plane, no three of which are collinear. Find ...

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  18. A student is allowed to select atmost n books from a collection of (2n...

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  19. Determine the number of 5 card combinations out of a deck of 52 cards ...

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  20. In how many ways can we select a cricket eleven from 17 players in whi...

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