Problem 1001 2 3 1 5 4 是几

201312201401019 | 2015-08-15 19:52:41Author
2 3 1 5 4 是几
admin | 2015-08-15 19:58:42# 1
6
firmsnail | 2015-08-15 20:01:26# 2
是因为2*3是6吗?那 2 1 5 4 3, 是不是应该是2*2 = 4?