How many pairs of letters are there in the word "CASTRAPHONE"

 Q: How many pairs of letters are there in the word "CASTRAPHONE" which have as many letters between them in the word as in the alphabet?

• A) 3

• B) 4

• C) 5

• D) 6

Answer: D) 6

Explanation:

Here's how to find the letter pairs:

1. Alphabet Reference: Consider the order of letters in the alphabet.

2. Identify Pairs: Find pairs within the word "CASTRAPHONE" that have the same number of letters between them as their positions in the alphabet. Here are the 6 pairs:

• ST: Two letters between them in the word (RA), just like in the alphabet.

• ON: Two letters between them in the word (STR), just like in the alphabet.

• HONE: Three letters between them in the word (RAP), matching the alphabet.

• TRAPHO: Five letters between them (N), matching the alphabet.

• TRAPHON: Six letters between them (E), matching the alphabet.

• RAP: Two letters between them (T), matching the alphabet.