publication date: Sunday, June 14, 2015 (part of Summer 2015)

category: Education

clue: The views on this academic's tutoring videos add up to a lot of traffic.

explanation: Khan founded Khan Academy, an online tutoring service using videos online, focused primarily on mathematics and personal finance. more…

difficulty: hard

solved by: Russ Wilhelm, Steve West, LaVonne Lemler, Chris Lemler, Samir Mehta, Justin Woods, Denise Sawicki, Joanna Woods, Mike Eberhart, and Aaron Shurtleff


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