How many such pairs of letters are there in word ENGLISH, each of which has as many letters between its two letters as there are between them in the English alphabets?
Word - ENGLISH
Pairs of letters which have as many letters between its two letters as there are between them in the English alphabets
= (E,G) , (G,I) , (N,L) , (E,I)
Thus, there are 4 such pairs.
=> Ans - (E)
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