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From a committee of 8 persons, in how ma...

From a committee of 8 persons, in how many ways can we choose a chairman and a vice chairman assuming one person can not hold more than one position?

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PSEB-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. How many 3-digit even numbers can be made using the digits 1, 2, 3, 4,...

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  2. Find the number of 4-digit numbersthat can be formed using the digits ...

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  3. From a committee of 8 persons, in how many ways can we choose a chairm...

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  4. Find n if "^(n-1)P3 : "^nP4 =1:9.

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  5. Find r if "^5Pr =2 "^6P(r-1).

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  6. Find r if "^5Pr = "^6P(r-1).

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

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  8. How many words, with or without meaning can be made from the letters o...

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  9. How many words, with or without meaning can be made from the letters o...

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  10. How many words, with or without meaning can be made from the letters o...

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  11. In how many of the distinct permutations of the letters in MISSISSIPPI...

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

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

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

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

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

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

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

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

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

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