You can make a calculator count for you by pressing the keys
1 + = =
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
To make it count by twos, press 2 + = =
| 2 | 4 | 6 | 8 | 10 | 12 |
You can make it count by any number you choose.
Now the question:
You can count by ones to reach 24
You can count by twos to reach 24
What else can you count by to reach 24?