Problem
First name
Bhuvan
School
Weald Junior School
Country
Age
10
The first thing you do is find the different combinations that add up to 15
1+14 2+13 3+12 4+11 5+10 {6+9} 7+8 (8+7) 9+6 10+5
=15
Then find the combinations for 20,
5+15 6+14 (7+13) 8+12 {9+11}
=20
soulution 1 Solution 2
8 + 7 + 13 6 + 7 + 13
15 20 15 20
6 9 11 12 4 14 7
8 7 13 10 6 12 9
The pattern between the 2 sequences is +2 -2 so if you try finding the different combinations following the same rule you cant find any more.