But wait: is it divisible by $9$ always? No, as $105 = 3 \cdot 5 \cdot 7$, not divisible by 9. - AMAZONAWS

Does Every Number Divisible by 9 Always Work? No—Take 105, Which Proves the Point!

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$But wait: is it divisible by $9$ always? No, as $105 = 3 \cdot 5 \cdot 7$, not divisible by 9.$