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Determine n if "^(2n)C3 : "^nC3 =12:1...

Determine n if `"^(2n)C_3 ` : `"^nC_3 =12:1`

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Determine n if "^(2n)C_3 : "^nC_3 = 11 : 1

If "^(2n)C_3 : ^nC_2= 12: 1 , find n .

Determine the value of n if ^(n)C_3: ^nC_2=5:1 .

Find n if "^nC_2 = ^nC_3 .

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Prove that "^(n-1)C_3+ ^(n-1)C_4 > ^nC_3 if n >7.

If "^nC_10= ^nC_12 , determine n and hence "^nC_5 .

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PSEB-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. In how many ways can the letters of the word PERMUTATIONS be arranged ...

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  2. If "^nC8 = "^nC2 , find "^nC2 .

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  3. Determine n if "^(2n)C3 : "^nC3 =12:1

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  4. Determine n if "^(2n)C3 : "^nC3 = 11 : 1

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  5. How many chords can be drawn through 21 points on a circle?

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  6. In how many ways can a team of 3 boys and 3 girls be selected from 5 b...

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  7. Find the number of ways of selecting 9 balls from 6 red balls, 5 white...

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  8. Determine the number of 5 card combinations out of a deck of 52 cards ...

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  9. In how many ways can one select a cricket team of eleven from 17 playe...

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  10. A bag contains 5 black and 6 red balls. Determine the number of ways i...

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  11. In how many ways can a student choose a programme of 5 courses if 9 co...

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  12. How many words, with or without meaning, each of 2 vowels and 3 conson...

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  13. How many words, with or without meaning, can be formed using all the l...

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  14. A committee of 7 has to be formed from 9 boys and 4 girls. In how many...

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  15. A committee of 7 has to be formed from 9 boys and 4 girls. In how many...

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  16. A committee of 7 has to be formed from 9 boys and 4 girls. In how many...

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  17. If the different permutations of all the letter of the word EXAMINATIO...

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  18. How many 6-digit numbers can be formed from the digits 0, 1, 3, 5, 7 a...

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  19. The English alphabet has 5 vowels and 21 consonants. How many words wi...

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  20. In an examination, a question paper consists of 12 questions divided i...

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