Sandy Wood
Brain Game: Calculating Calendars
by Sandy Wood - August 19, 2008 - 6:30 AM

ANSWER: 28 different plates. He’d need seven plates for 31-day months (with the first day of the month on different weekdays), another seven plates for 30-day months, and another seven plates for February’s 28 days. He’d also need an additional seven plates for leap year Februarys, which have 29 days.

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