Tom,Bill and John have a table tennis match.Tom played three games.Bill played five .and John four.

题目

Tom,Bill and John have a table tennis match.Tom played three games.Bill played five .and John four.
How many games did they played together?why?
这题答案是6,但我不知道为什么,有谁知道的吗,好急!

答案

如果要列式子就像楼上的那样：
3+5+4=12(共12场）每两人一场 12/2=6场
具体的场次对阵是：Tom对Bill 两场
Tom对John 一场
Bill对John 三场
希望我的答案能给予你实际的帮助.