AB, BC, CD, DE, ?
The question presents a sequence of letter pairs and asks for the next item.
Identifying the Sequence Pattern
Examine the relationship between consecutive pairs in the sequence: AB, BC, CD, DE.
- AB: The first letter is 'A', followed by the next letter in the alphabet, 'B'.
- BC: The first letter 'B' is the same as the second letter of the previous pair. It is followed by the next letter in the alphabet, 'C'.
- CD: The first letter 'C' is the same as the second letter of the previous pair. It is followed by the next letter in the alphabet, 'D'.
- DE: The first letter 'D' is the same as the second letter of the previous pair. It is followed by the next letter in the alphabet, 'E'.
The pattern is that the first letter of each pair is the same as the second letter of the preceding pair, and the second letter is the subsequent letter in the alphabet.
Determining the Next Term
To find the next item in the sequence, apply the identified pattern to the last given pair, 'DE'.
- The first letter of the next pair must be 'E' (the second letter of 'DE').
- The second letter must be the letter immediately following 'E' in the alphabet, which is 'F'.
Therefore, the next pair in the sequence is EF.
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