Alternatively, since $55 \equiv 0 \mod 11$, the square is divisible by $11^2$, hence by 11. - AMAZONAWS

📅 March 6, 2026 👤 scraface

Mar 06, 2026

$Alternatively, since $55 \equiv 0 \mod 11$, the square is divisible by $11^2$, hence by 11.$