Curated
5| # | Title | Difficulty | Tags | |
|---|---|---|---|---|
| 579 | A big power mod five | Easy | ||
| 580 | A linear congruence | Easy | ||
| 581 | Two remainders at once | Easy | ||
| 582 | Last digit of a power of three | Easy | ||
| 585 | Squares mod seven | Easy |
From open sources
5Complete problems only, with worked solutions first. Show everything
| # | Title | Difficulty | |
|---|---|---|---|
| 128015 | Clock Arithmetic · Example 1 | Easy | |
| 128016 | Clock Arithmetic · Example 2 | Easy | |
| 128018 | Clock Arithmetic · Example 4 | Easy | |
| 128019 | Clock Arithmetic · Example 5 | Easy | |
| 128020 | Clock Arithmetic · Example 6 | Easy |