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Fill in the Blank: Happy __th Birthday, JiJi!

Today we get to celebrate the beloved penguin in ST Math software games, as April 28 is JiJi’s birthday! And we’ve got a mini math challenge for you to determine JiJi’s current age:

On this day, if you take the sum of the digits of the current year, it equals the product of the digits of JiJi's age. This statement has been true each year since 2010 and will be true for another two years. After that, this special relationship between the year and JiJi's age won't happen again until the year 2239 (yes, 2239!). So… how old is JiJi?

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Abby Daniels

About the Author

Abby Daniels was Director of Communications at MIND Research Institute, where she worked for over 10 years as the organization transformed from a small, local nonprofit to a national leader in education.

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