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365, so says the Mensa Puzzle Calendar. "There are 356 days in a year and every month/day combination represents a "Perfect Sum" day for some 21st century year. For example 02/05 is Feb. 5, 2007 and 12/29 is Dec. 29, 2041. The only tricky date is the leap day 02/29. Since 2031 is not a leap year (not divisible by 4) 2/29 cannot be a "perfect sum" day for any year."

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Kaia Paucek

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3y ago

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365, so says the Mensa Puzzle Calendar. "There are 356 days in a year and every month/day combination represents a "Perfect Sum" day for some 21st century year. For example 02/05 is Feb. 5, 2007 and 12/29 is Dec. 29, 2041. The only tricky date is the leap day 02/29. Since 2031 is not a leap year (not divisible by 4) 2/29 cannot be a "perfect sum" day for any year."


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