Final answer:
The sequence alternates between two intertwined subsequences, both increasing by 1. Since the last number is from the second subsequence, the next number is 5 from the first subsequence.
Step-by-step explanation:
The given sequence shows two interleaved patterns. Looking closely, we can see that there are two subsequences interwoven: the first sequence is increasing by 1 each time (2, 3, 4), and the second sequence is increasing by 1 starting from 5 (5, 6, 7). Extrapolating these patterns, we can determine that the next number in the first subsequence is 4 + 1 = 5, and the next number in the second sequence would be 7 + 1 = 8. Since the last number mentioned was 7, the next number following the first subsequence is 5.