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There are 12 points in a plane ,5 only...

There are 12 points in a plane ,5 only of which are collinear . The number of triangles which can be formed by joining the points is

A

210

B

220

C

35

D

105

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
  1. The number of lines that can be formed from 12 points is a plan...

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  2. Out of thirty points in a plane , eight of them are collinear . T...

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  3. There are 12 points in a plane ,5 only of which are collinear . T...

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  4. The sides AB,BC,CA of a Delta ABC have 3,4and 5 interior poin...

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  5. The number of triangles formed by joining the vertices of a hexag...

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  6. IF T(n) dentoes the number of triangle formed with n points in ...

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  7. Let T(n) be the number of all possible triangles formed by joi...

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  8. Tm denotes the number of triangles that can be formed with the ...

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  9. Given 5 line segments of lengths 2,3,4,5,6 units then the number ...

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  10. The greatest number of points of intersection of 8 lines and 4 cir...

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  11. In plane there are 37 straight lines , of which 13 pass throug...

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  12. A set of m parallel lines another another set of n parallel l...

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

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

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  15. The number oif diagonals of an octagons is

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

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

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

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

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

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