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2024 Nigerian MO Round 2, Problem 4
Tags: algebra , ap
Let the AP of the form $4$, $9$, $\ldots$ be $\mathbf{A}$, and the AP of the form $16$, $25$, $\ldots$ be $\mathbf{B}$. Find the number of integers from $1$ to $2024$ inclusive, that appear in only one of the AP's. For clarification, the AP's $\mathbf{A}$ and $\mathbf{B}$ start from 4 and 16 respectively. [hide=Answer]584[/hide]