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有一道地老天荒的趣味数学题:树上有三只鸟,猎人开枪打死了一只,树上还有几只鸟?我上小学时,老师也讲过,现在孙子上小学了,老师不讲这道题了。我
There was an interesting math problem: In the tree there were three birds. The hunter shot and killed one. There were still several birds in the tree. When I was in elementary school, the teacher also said that the grandson is now in elementary school. The teacher does not speak. This is the question. I