Question 85

How many such pairs of letters are there in the word 'TEACH' each of which has as many letters between them in the word (in both forward and backward directions) as they have between them in the English alphabetical series ?

Solution

Word - 'TEACH'

There are 2 pairs of letters which have as many letters between them in the word as they have between them in the English alphabetical series

= (E,C) , (E,H)

=> Ans - (C)

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