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Permutation

How many such...

Question

How many such pairs of letters are there in the word RESIDENTIAL, each of which has as many letters between them in the word as in the English alphabetical series?

A

One

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B

Two

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C

Three

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D

None

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E

More than three

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Solution

The correct option is B Two

Hence, there are two such pairs of letters - AE and DE

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