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How many different signals can be made f...

How many different signals can be made from 4 red, 2 white and 3 green flags by arranging all of them vertically on a flagstaff?

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RD SHARMA ENGLISH-PERMUTATIONS-All Questions
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  10. In how many ways can 4 red , 3 yellow and 2 green discs be arranged in...

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  18. Write the total number of possible outcomes in a throw of 3 dice in ...

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  19. Write the number of arrangements of the word BANANA in which two N’s ...

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