If any two letters in the word PRISON have as many letters between them in the word as there are in the
English alphabet, they form an alpha-pair. How many such alpha-pairs are there is the word PRISON ?
(A) 4 (B) 1 (C) 2 (D) 3
– O and N: There are 13 letters between O and N in the English alphabet, so they do not form an alpha-pair. Therefore, there are no alpha-pairs in the word PRISON.