4个7等于1,2,3,4,5,7,6,8,9,107*7/7/7=1 7*7+7*7=2 (7+7+7)*7=3 77/7-7=4 7-(7+7)/7=5 (7*7-7)/7=6 (7*7+7)/7=8 7+7/7+7=9 77-7/7=10

问题描述:

4个7等于1,2,3,4,5,7,6,8,9,10
7*7/7/7=1 7*7+7*7=2 (7+7+7)*7=3 77/7-7=4 7-(7+7)/7=5 (7*7-7)/7=6 (7*7+7)/7=8 7+7/7+7=9 77-7/7=10

7-7+7/7=1;7/7+7/7=2;7*(7-7)+7=7;(7+7)/7+7=9,
其他的还没想出来