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How many three letter words can be forme...

How many three letter words can be formed using `a , b , c , d , e` if Repetition is not allowed ii. repetition is allowed?

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RD SHARMA ENGLISH-PERMUTATIONS-All Questions
  1. Find the number of numbers of 5 digits than can be formed with the ...

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  2. How many 4-digit numbers are there when a digit may be repeated an ...

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  3. How many three letter words can be formed using a , b , c , d , e if R...

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  4. In how many ways 5 rings of different types can be worn in 4 fingers?

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  5. In how many ways can 5 letters be posted in 4 letter boxes?

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  6. A mint prepares metallic calendars specifying months, dates and days i...

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  7. Find the total number of ways in which n distinct objects can be put ...

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  8. Find the total number of ways in which n distinct objects can be put i...

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  9. By using the digits 0,1,2,3,4 and 5 (repetitions not allowed) numbers ...

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  10. In  a class there are 27 boys and 14 girls. The teacher wants to se...

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  11. A person wants to buy one fountain pen, one ball pen and one pencil ...

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  12. From Goa to Bombay there are two roots; air, and sea. From Bombay to ...

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  13. A coin is tossed three times and outcomes are recorded. How many pos...

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  14. In how many ways can an examinee answer a set of ten true/false type ...

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  15. A letter lock consists of three rings each marked with 10 different ...

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  16. There are 6 multiple choice questions in an examination. How many s...

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  17. Given 7 flags of different colours, how many different signals can be ...

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  18. A team consists of 6 boys and 4 girls and other has 5 boys and 3 girls...

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  19. How many A.P.’s with 10 terms are there whose first term is in the set...

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  20. How many three digit numbers are there with no digit repeated?

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