Question

将1—49个数字分成7组,每组要等于175,

Answer 1

1,49,14,36,15,35

2,48,13,37,16,34

3,47,12,38,17,33

4,46,11,39,18,32

5,45,10,40,19,31

6,44,9,41,20,30

7,43,8,42,21,29

每行和相同,共 150.

还剩22,23,24,25,26,27,28

对应25-3,25-2,25-1,25,25+1,25+2,25+3

第一列 1,2,3,4,5,6,7

换为 1,3,5,7,2,4,6

则行和为150,150＋1,150+2,150+3,150-3,150-2,150-1

分别于与25,25-1,25-2,25-3,25+3,25+2,25+1对应.

对应得七行为：

1,49,14,36,15,35,25

3,48,13,37,16,34,24

5,47,12,38,17,33,23

7,46,11,39,18,32,22

2,45,10,40,19,31,28

4,44,9,41,20,30,27

6,43,8,42,21,29,26