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How many different signals can be transmitted by arranging 3 red, 2 yellow and 2 green flags on a pole ?

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MODERN PUBLICATION-PERMUTATIONS AND COMBINATIONS-EXERCISE
  1. How many numbers between 20,000 and 30,000 can be formed by using the ...

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  2. How many numbers greater than one lac can be formed by using the digit...

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  3. How many different signals can be transmitted by arranging 3 red, 2 ye...

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  4. In how many ways can 5 flags, in which 3 are red, one is white and one...

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  5. Find the number of arrangements, which can be made from the letters of...

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  6. Find the number of arrangements, which can be made from the letters of...

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  7. Find the number of arrangements, which can be made from the letters of...

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  8. Find the number of arrangements, which can be made from the letters of...

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  9. Find the number of arrangements, which can be made from the letters of...

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  10. Find the number of arrangements, which can be made from the letters of...

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  11. Find the number of arrangements, which can be made from the letters of...

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  12. Find the number of arrangements, which can be made from the letters of...

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  13. Find the number of arrangements, which can be made from the letters of...

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  14. Find the number of arrangements, which can be made from the letters of...

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  15. In how many of the distinct permutations of the letters in MISSISSIPPI...

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  16. There are five round stickers, 3 of them are red and the other two are...

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  17. How many words can be formed using the letter A thrice. the letter B t...

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  18. Find the permutations of the word ‘SERIES’. How many of them begin and...

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  19. In how many distinct ways can the product xy^2z^2 be written without u...

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  20. There are 3 white, 4 red and 1 blue marbles in a bag. They are drawn o...

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