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Find the number of permutations of the l...

Find the number of permutations of the letters of word 'DISSIMILAR' when all are taken at a time.

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JBD PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXAMPLE
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  2. In how many ways can 5 girls be seated in a row so that two girls Ridh...

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  3. Find the number of permutations of the letters of word 'DISSIMILAR' wh...

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  4. If nC6=nC2, find ^nC2.

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  5. If 10Cr=^10C2 find the values of r.

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

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

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

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  9. Out of 18 points in a plane, no three are in the same straight line ex...

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  10. How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and ...

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  11. How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and ...

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  12. If (n!)/(2!(n-2)!):(n!)/(4!(n-4)!) =2:1. Find the value of n.

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  13. show that 2^16 divides 32!. also, find the largest value of n for whic...

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  14. What is the largest power of 2 contained in 32!.

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  15. How many different words (with or without meaning) can be formed using...

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  16. Find the value of n such that ""^nP5 = 42 ""^nP3,,n gt 4.

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

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

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

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

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