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问几道英语奥数题1.Where do the marshal(元帅) and the general(将军) have

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问几道英语奥数题
1.Where do the marshal(元帅) and the general(将军) have the same rank(地位)?
2.When do 10+10=10,and 10-10=10
3.In the middle of the paper,there is a circle hole with a 5cm diameter on it.you have a coin with 7cm diameter.Now you want pass the coin through the hole.How?write down your method.
1,国际象棋的棋盘上
2,10个手指头戴上手套的时候,10+10=10;带上手套的十个手指卸掉手套,还是十个手指,因此10-10=10.
3,将直径为7厘米的硬币溶解掉就可以了