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The number of diagonal for an n side...

The number of diagonal for an n sided polygon with 10 sides is

A

35

B

36

C

38

D

39

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
  1. A set of m parallel lines another another set of n parallel l...

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  2. The number of diagonals for an n sided polygon is

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  3. The number of diagonal for an n sided polygon with 10 sides is

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  4. The number oif diagonals of an octagons is

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  5. The polygon in which the number of diagonals is equal to the numbe...

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  6. IF a polygon has 35 diagonals , then the number of sides of t...

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  7. The number of sides of a polygon having diagonals 44 is

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  8. A polygon has 54 diagonals , then the number of its sides is :

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  9. A regular polygon of n sides has170 digonals . Then n=

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  10. IF a polygon of n sides has 275 diagonals then n=

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  11. The number of triangle that can be formed by joining the vertices ...

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  12. The number of triangle that can be formed by joining the angula...

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  13. The number of triangle whose vertices are at the vertices of an ...

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  14. The number of rectangles formed in a chess board is

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  15. If one square choosed randomly from chess board. Th probability of get...

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  16. The number of rectangles which are not squares formed in a ches...

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  17. The number of ways of selecting two having common side in a ches...

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  18. From the two systems of lines x-h=0 , h=0,1,2,3,4,5 and y-k=0,1,2,3...

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  19. The number of ways of dividing 12 boys into 2 groups of 7,5 boys r...

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  20. The number of ways of dividing 10 books into 3 group of 5,3,2,...

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