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Find the number of ways in which the letters of the word ARRANGE can be arranged such that both R do not come together.

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Find the number of ways in which the letters of the word ARRANGE can be arranged such that both R do not come together.
posted May 10, 2018 by anonymous

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1 Answer

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Total number of rearrangements possible = 7!/(2!×2!)
Rearrangements where the R's are together = 6!/2!
Rearrangements where R's aren't together = 7!/4 - 6!/2!
= 5040/4 - 720/2 = 900.

answer May 11, 2018 by Tejas Naik



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