Solution

24282

Problem / game
Fifteen cards Back to problem
First name
Emma
School
Kenakena
Country
New Zealand
Age
13

For the first 2 cards i uliminated all of the numbers till i got to 8 and 7 which equals 15
then i went 7+13=20
then i went 13+10=23
then i went 10+6=16
then i went 6+12=18
then i went 12+9=21
so the cards looked like this. 8 7 13 10 6 12 9