How many pairs of letters are there in the word FRONTIER, having the same number of spaces in the English alphabet as in the given word?
Ans:
There are two pairs of letters: N - O, N - R
How many pairs of letters are there in the word FRONTIER, having the same number of spaces in the English alphabet as in the given word?
Ans:
There are two pairs of letters: N - O, N - R
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