How many such pairs of letters are there in the word SENDING, each of which has as many letters between its two letters as there are between them in the English alphabet?
A
1
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B
2
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C
3
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D
0
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Solution
The correct option is C3
∴ Possible pairs are
I(N)G, D(IN)G, and S(ENDI)N
Hence, only three such pairs are there.