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 in the word 'PRISON' ?
In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 9, 11, 20, 31, (…….), 82