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Find the value of r if 5Pr = 6P(r-1)...

Find the value of r if
`5P_r = 6P_(r-1)`

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A N EXCEL PUBLICATION-PERMUTATIONS AND COMBINATIONS-QUESTION BANK
  1. Find the value of n such that (n-1)P3 : nP4=1:9

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

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  3. Find the value of r if 5Pr = 6P(r-1)

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  4. How many 8 letter words, with or without meaning, can be formed using ...

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  5. How many words, with or without meaning that can be made from the lett...

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  6. How many words, with or without meaning that can be made from the lett...

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  7. How many words, with or without meaning that can be made from the lett...

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  8. How many permutations are there of the 11 letters in MISSISSIPPI al...

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

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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 the letters of the word ‘PERMUTATIONS’ be arrange...

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  12. Complete the following table

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  13. Given the digits 1,2,3 and 8 How many one digit numbers can be formed ...

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  14. Given the digits 1,2,3 and 8 How many two digit numbers can be formed ...

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  15. Given the digits 1,2,3 and 8 How many three digit numbers can be forme...

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  16. Given the digits 1,2,3 and 8 How many four digit numbers can be formed...

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  17. Given the digits 1,2,3 and 8 How many numbers can be formed from the g...

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  18. Given the digits 1,2,3 and 8 If repetition of digits is not allowed, f...

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

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  20. Given the digits 0,1,2,3,4, 5,6,7, 8,9 Suppose Raju is asked to form 5...

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