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IF ""^(n) C(3) : ""^((2n-1) ) C(2) = ...

IF ` ""^(n) C_(3) : ""^((2n-1) ) C_(2) = 8 : 15 ` then n=

A

7

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8

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9

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10

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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
  1. The least value of n so that ""^(n) C(5) + ""^(n ) C(6) gt (...

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  2. The least positive intergral value of n which satisfies the ...

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  3. IF ""^(n) C(3) : ""^((2n-1) ) C(2) = 8 : 15 then n=

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  4. IF ""^(n) C(3) : ""^((2n-1) ) C(2) = 8 : 15 then n=

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  5. IF C (2n, 3) : C (n,2) = 12 : 1, then n=

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  6. If ""^(2n ) C(3) : ""^(n) C(2) = 44 : 3 then n=

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  7. If ""^(n ) C (3) : ""^(n) C(2) = 10 : 3 , then n=

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  8. IF ""^(n) C(r-1) :""^(n)C(r)= 2 : 3 then ( n , r) =

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  9. IF ""^(n) C(r-1) : ""^(n )C(r) : = 2: 4 : then (n,r)=

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  10. IF ""^((n+1))C((r+1)): ""^(n)C(r) : ""^((n-1))C((r-1))=11:6:3 then (...

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  11. IF ""^(n) C((r-1))=36 ,""^(n)C(r)=84 , ""^(n)C(r+1)=126 , then r=

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  12. ""^(n) C(r-1) = 330 ,""^(n)C(r)=462 , ""^(n)C(r+1) = 462 implies r=

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  13. "Prove that "(""^(4n)C(2n))/(""^(2n)C(n))=(1.3,5......(4n-1))/({1.3.5....

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  14. (2^(n) [1.3.5. . .(2n-1) ])/(n!)=

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  15. If S(n) = underset (r=0) overset( n) sum (1) /(""^(n) C(r)) and T...

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  16. The ratio of ""^(24 ) C(r) to ""^(25 ) C(r) when each of them h...

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  17. The difference between the greatest values of ""^(15)C(r) and ""...

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  18. The number of ways in which 6players can be selected from a b...

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  19. The number of ways in which 5players are selected from 10 players so ...

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  20. The number of ways that 6 questions can choose out of 9 question ...

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