Divisibility Rule for 12
✅ Shortcut: A number is divisible by 12 if it is divisible by both 3 and 4.
How to Check:
- ✔️ Check if the sum of digits is divisible by 3.
- ✔️ Check if the last two digits form a number divisible by 4.
- ✔️ If both are true, the number is divisible by 12.
Examples:
| Number | Sum of Digits | Last 2 Digits | Div by 3? | Div by 4? | Div by 12? |
|---|---|---|---|---|---|
| 144 | 9 | 44 | ✅ | ✅ | ✅ Yes |
| 60 | 6 | 60 | ✅ | ✅ | ✅ Yes |
| 66 | 12 | 66 | ✅ | ❌ | ❌ No |
| 48 | 12 | 48 | ✅ | ✅ | ✅ Yes |
| 120 | 3 | 20 | ✅ | ❌ | ❌ No |