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数学
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两栋居民楼相距60米,绿化队把19棵树栽成一行在两楼之间,每两树之间的距离是多少?
人气:471 ℃ 时间:2020-04-13 08:01:35
解答
60÷(19+1)=60÷20=3(米)
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