There are 25 squares in the picture.If you put 5 coins in the square and three can be only one in each line and column,how many ways can you put the coins?就是第2句不太明白关键就是那个three如果按题意做(three)就太简单了也不符合平常做的常理
问题描述：
There are 25 squares in the picture.If you put 5 coins in the square and three can be only one in each line and column,how many ways can you put the coins?
就是第2句不太明白
关键就是那个three
如果按题意做(three)就太简单了
也不符合平常做的常理
答
图中有25个方块。如果你在方块中放5个硬币，而且在每个横线和竖线的交点处只能放一个，那么这些硬币有多少种放法？
three应该是there吗？
答
图中有25个正方形.放5枚硬币在正方形里,其中只允许3枚在同一行或列,你有多少种排法?