Question
100 children were queuing up to collect a free gift. Every fifth child in the queue received a post-it-pad and every seventh child received a file. How many children received both a post-it-pad and a file?
4 m

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100 children were queuing up to collect a free gift. Every fifth child in the queue received a post-it-pad and every seventh child received a file. How many children received both a post-it-pad and a file?