How many such pairs of letters are there in the word SCHEDULE (in both forward and backward directions),each of which has as many letters between them in the word as in the English alphabetical series?
Word - SCHEDULE
There are 3 pairs of letters which have as many letters between them in the word as in the English alphabetical series.
= (C,E) , (E,D) , (H,L)
=> Ans - (D)
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