Question

有两组数:A组:1,3,5,7,9,B组:2,4,6,8,1.分别从A组和B组中任意选出一个数相加,能得到个不同的和.

Answer 1

1 3 5 7 9

2 3 5 7 9 11

4 5 7 9 11 13

6 7 9 11 13 15

8 9 11 13 15 17

1 2 4 6 8 10

结论：2,3,4,5,6,7,8,9,10,11,13,15,17,共13个