Question:medium

Find the number of integers \(n\) such that \(1 \leq n \leq 100\) and \(n^2 + 3n + 2\) is divisible by 5.

Show Hint

For divisibility of polynomial expressions modulo \(m\), factorize if possible and check residues satisfying divisibility conditions.
Updated On: Nov 26, 2025
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