How many pairs of letters are there in the word'OBJECTIVE?

In the Word "OBJECTIVE," there are 9 letters in total. To find the number of pairs of letters, we use the combination formula for choosing 2 letters from 9, which is calculated as ( \binom{9}{2} = \frac{9 \times 8}{2 \times 1} = 36 ). Therefore, there are 36 pairs of letters in the Word "OBJECTIVE."