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if 1/(8!) +1/(9!) = x/(10!) , then find ...

if `1/(8!) +1/(9!) = x/(10!)` , then find x.

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MAXIMUM PUBLICATION-PERMUTATION AND COMBINATIONS-EXAMPLE
  1. In how many different ways can the letters of the word HEXAGON be perm...

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  2. In how many different ways can a team of 3 boys and 3 girls be selecte...

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  3. if 1/(8!) +1/(9!) = x/(10!) , then find x.

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  4. How many 4 digit numbers are there with no digit repeated?

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  5. If nC8 = nC2, then find nC3 ?

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  6. Consider all the letters of the word 'FALIURE' How many words can be...

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  7. Consider all the letters of the word 'FALIURE' How many words can be...

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  8. Consider all the letters of the word 'FALIURE' How many words begin ...

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  9. Find the value of n such that nP5=42 xx nP3,n>4

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

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  11. If 2nC3 : nC3 = 12:1 find n.

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  12. What is the number of ways of choosing 4 cards from a pack of 52 playi...

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  13. If nC9 = nC8 find nC17

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  14. A committee of 5 person is to be selected from a group of 4 men and 5 ...

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  15. If nC9 = nC8 find nC17

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  16. How many three digit number can be formed using the digits 1,2,3,4,5 i...

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  17. In How many ways can a team of 4 boys and 3 girls be selected from 6 b...

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  18. If nC5 = nC4 find nC8

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  19. How many chords can be drawn through 20 points on a circle?

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  20. A bag contains 6 red and 5 blue balls. In how many ways can one choose...

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