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Each of three tall buildings has a light that flashes on its roof to warn low-flying aircraft. One light flashes every 3 seconds, another light flashes every 4 seconds, and the third light flashes every 6 seconds. If the three lights flash at precisely the same moment, what is the least number of seconds after which the three lights will flash again at the same moment?
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· 相关考点
1.7.1 公倍数与最小公倍数
以上解析由 考满分老师提供。
