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If nC7 = nC5 , n = ………....

If `nC_7 = nC_5` , n = ……….

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MAXIMUM PUBLICATION-PERMUTATION AND COMBINATIONS-EXAMPLE
  1. if 1/(6!) +1/(7!) = x/(8!) , find x.

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

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  3. If nC7 = nC5 , n = ……….

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  4. A bag contains 5 blue and 6 white balls. Determine the number of ways ...

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  5. What is number of choosing 3 cards from a pack of 52 playing cards? In...

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  6. IF 1/(8!) +1/(9!) = x/(10!) , find x.

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  7. How many four digit numbers can be formed using the digits 4,5,6,7,8 i...

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  8. Find the number of arrangements that can be made from the letters of t...

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

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

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  11. In how many ways can 5 girls and 3 boys be seated in a row so that no ...

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  12. How many chords can be drawn through 21 points?

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  13. What is the minimum number of ways of choosing 4 cards from a pack of ...

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  14. What is the minimum number of ways of choosing 4 cards from a pack of ...

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  15. Find the number of permutation of the letters of the word, ALLAHABAD.

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  16. How many 5-digit telephone numbers can be constructed using the digits...

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  17. Find 'n' if 9xx ^((n-1))P3 = ^nP4 .

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  18. Find the number of words that can be formed from the letters of the wo...

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  19. In how many ways can a group of 12 students be selected from 15 studen...

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  20. (0!)/(1!)=……..

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