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266個1到1000裏能被2整除的有500個1到1000裏能被3整除的有333個1到1000裏能被5整除的有200個1到1000裏能同時被2和3整除的有166個1到1000裏能同時被2和5整除的有100個1到1000裏能同時被3和5整除的有66個1到1000裏能同…
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