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

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If ^(2n)C_3: ^nC_3=11:1 find the value of n.

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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
  1. If (n+3)! =56 x (n+1)!, Find the value of n.

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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. Find the 28th term from the end term of the AP 6, 9, 12, 15, 18, ....,...

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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. Which term of the GP 3,6,12,24, ... is 3072?

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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. If p ,q in {1,2,3,4,} , then find the number of equations of form px^2...

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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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