Problem Teachers' Notes Hint Solution

Consecutive Seven

Many possible, for example:

3 + 8 + 16 = 27
2 + 7 + 19 = 28
0 + 9 + 20 = 29
5 + 10 + 15 = 30
1 + 12 + 18 = 31
4 + 11 + 17 = 32
6 + 13 + 14 = 33

0 + 20 + 7 = 27
19 + 8 + 1 = 28
18 + 2 + 9 = 29
17 + 3 + 10 = 30
16 + 4 + 11 = 31
15 + 5 + 12 = 32
14 + 6 + 13 = 33