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A polygon has 44 diagonals the number of...

A polygon has 44 diagonals the number of sides of the polygon is

A

11

B

7

C

8

D

9

Text Solution

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The correct Answer is:
A
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PATHFINDER-PERMUTATION AND COMBINATIONS-QUESTION BANK
  1. Let Tn denote of the number of triangles which can be formed using the...

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  2. The number of parallelograms that can be formed from a set of four par...

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  3. A polygon has 44 diagonals the number of sides of the polygon is

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  4. In a room each person present shakes hand with the other . If the tota...

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  5. The value of : ^15C1 +^15C3 + ^15C5+…..+ ^15C15 is

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  6. The number of 10 digit numbers formed by using the digits 1&2 is

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  7. The maximum number of trials to open n locks by n keys is 105. Then n...

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  8. The number of circles that can be drawn out of 10 points of which 7 ar...

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  9. The number of different 6-digit numbers that can be formed using the t...

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  10. The number of ways in which 6 different balls can be put in two boxes ...

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  11. If 7 points out of 12 are in same st. line the number of triangles for...

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  12. The total number of 9 digit numbers which have all different digit is

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  13. The number of ways in which 5 letters can be posted in 10 letter boxes...

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  14. The number of five digit telephone numbers none of their digits being ...

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  15. There are 13 stations on a certain railway line.How many kinds of diff...

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  16. Prove that (2n!)/(n!)={1.3.5.....(2n-1)}2^n

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  17. Find the number of diagonals in a polygon with n sides.

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  18. A man has 6 friends. In how many ways can he invite one or more of the...

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  19. Find the value of n ^ 2nC4: ^nC3=35:2

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  20. If , ^nC1,^nC2 and ^nC3 are in AP. Find the value of n.

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