Question
100 pupils were queuing up to collect a free gift. Every third pupil in the queue received a stapler and every seventh pupil received a puncher. How many pupils received both a stapler and a puncher?
4 m

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100 pupils were queuing up to collect a free gift. Every third pupil in the queue received a stapler and every seventh pupil received a puncher. How many pupils received both a stapler and a puncher?