Question
60 children were queuing up to collect a free gift. Every third child in the queue received a post-it-pad and every tenth child received a puncher. How many children received both a post-it-pad and a puncher?
4 m

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60 children were queuing up to collect a free gift. Every third child in the queue received a post-it-pad and every tenth child received a puncher. How many children received both a post-it-pad and a puncher?