What is the next term in the series?
$$\text{BA, CA, DA, EA, ?}$$

Let's split each term into its constituent first and second letters:
1. The second letter of each cluster remains constant: $\text{A}$.
2. The first letter of each cluster follows a consecutive alphabetical pattern: $\text{B}\to \text{C}\to \text{D}\to \text{E}\to \text{F}$.

Combining them, the next term in the series is $\text{FA}$.