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prep 数学题2
if 500 is the multiple of 100 that is closest to x and 400 is the multiple of 100 that is closest to y, which multiple of 100 is closest to x+y?
1 x<500
2 y<400
这道题目什么意思啊?什么叫500是100和接近x的倍数?那x不是就是5吗?真没看懂。 |
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