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

If `"^nC_8` = `"^nC_2 `, find `"^nC_2 `.

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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. In how many ways can the letters of the word PERMUTATIONS be arranged ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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