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If the ratio ^2n C3:^n C3 is equal to 11...

If the ratio `^2n C_3:^n C_3` is equal to 11:1 find `ndot`

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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
  1. In ;a plane, there are 5 straight lines which will pass through a give...

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  2. If ^15 C(3r):^(15)C(r+1)=11 :3 , find the value of rdot

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  3. If the ratio ^2n C3:^n C3 is equal to 11:1 find ndot

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  4. There are n married couples at a party. Each person shakes hand with e...

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  5. Twenty-eight games were played in a football tournament with each team...

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  6. In a certain an algebraical exercise book there and 4 examples on a...

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  7. In a network of railways, a small island has 15 stations. Find the ...

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  8. A person tries to form as many different parties as he can, out of his...

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  9. Find the number of ways of selecting 3 pairs from 8 distinct objects.

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  10. Out of 10 consonants and 4 vowels, how many words can be formed each ...

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  11. In how many of the permutations of n thing taken r at a time will thre...

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  12. If ^(22)P(r+1):^(20)P(r+2)=11 : 52 ,find r

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  13. If ^(56)P(r+6):^(54)P(r+3)=30800 :1, find r.

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  14. Five persons entered the lift cabin on the ground floor of an 8-floor ...

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  15. In how many ways first and second rank in mathematics, first and secon...

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  16. Find the number of nonzero determinant of order 2 with elements 0 or 1...

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  17. Let p,q epsilon{1,2,3,4}. The number of equations of the form px^(2)+q...

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  18. Nishi has 5 coins, each of the different denomination. Find the number...

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  19. Find the number of groups that can be made from 5 different green ball...

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  20. Find the number of natural numbers which are less than 2xx10^8 and whi...

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