Number of Pairs of Letters in the Word SEQUENTIAL
To find the number of pairs of letters in the word SEQUENTIAL which have as many letters between them as are in the alphabet, we need to follow a systematic approach.

Identifying the Pairs
- The alphabet has 26 letters, so we are looking for pairs of letters in the word SEQUENTIAL that have exactly 24 letters between them.
- Starting from the first letter 'S', we can identify the pairs by counting 24 letters ahead.
- The pairs of letters that meet the criteria are 'S' and 'Y', 'E' and 'S', 'Q' and 'E', 'I' and 'A', 'A' and 'U', and 'L' and 'E'.
- Therefore, there are a total of 6 pairs of letters in the word SEQUENTIAL that have as many letters between them as are in the alphabet.

Explanation
- The pairs 'S' and 'Y', 'E' and 'S', 'Q' and 'E', 'I' and 'A', 'A' and 'U', and 'L' and 'E' fulfill the condition of having exactly 24 letters between them, as the alphabet consists of 26 letters.
- By systematically analyzing the word SEQUENTIAL, we can identify these pairs that meet the given criteria.
- It is important to carefully count the letters between each pair to ensure that they match the required number for the condition to be satisfied.
Therefore, there are 6 pairs of letters in the word SEQUENTIAL that have as many letters between them as are in the alphabet.