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How many words can be formed out of the letters of the word “TRIANGLE”? How many of these will begin with T and end in E?

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A N EXCEL PUBLICATION-PERMUTATIONS AND COMBINATIONS-QUESTION BANK
  1. In how many ways 4 boys and 3 girls be seated in a row of 7 chairs if ...

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  2. Find the number of all five digit numbers with distinct digits.

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  3. How many words can be formed out of the letters of the word “TRIANGLE”...

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  4. In flow many ways can the letters of the word “PENCIL” be arranged, so...

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  5. In how many ways can 9 examination papers be arranged so that the best...

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  6. In how many ways can 5 boys be seated at a round table?

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  7. In how many ways can 7 beads of different colours form a necklace?

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  8. If all the pemutations of the word ‘ ‘AGAIN” are arranged in a diction...

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  9. In how many ways can 5 men and 4 women be seated at a round table if e...

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  10. If 20 persons were invited for a party, in how many ways can they and ...

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  11. How many 3-digit numbers can be formed by using the digits 1 to 9 if n...

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

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  13. How many 3-digit even numbers can be made using the digits 1,2,3,4,6,7...

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  14. Find the number of 4-digit numbers that can be formed using the digits...

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

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  16. Find the value of n such that (n-1)P3 : nP4=1:9

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

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

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

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

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