DIY Challenge 5: When is it possible at all?
When is it possible to divide cards into 3 groups whose total is equal? Record your observations in a table. Can you find a pattern?
| Number of cards | Possible/Not Possible |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | Possible ✅ |
| 10 | |
| …… |
What students worked out4
Student 3
3 NP
4 NP
5 P
6 P
7 NP
8 P
9 P
10 NPStudent 6
5,6,8,9 is possible
3,4,7,10 is not possibleStudent 2
5/6/8/9-p
3/4/7/10-npStudent 5
3-np
4-np
5-p
6-p
7-np
8-p
9-p
10-p