A Math Problem From Singapore Goes Viral: When Is Cheryl’s Birthday? KENNETH CHANG A question of logic proves baffling. Can you figure it out? April 15, 2015 at 12:00AM http://nyti.ms/1OwwtpS http://nyti.ms/1FLIJ4E The New York Times Science Mathematics, Puzzles, Science and Technology

By KENNETH CHANG via NYT / Eethg. Corps. Inc. / Terrence Herschel G. Science http://nyti.ms/1OwwtpS A Math Problem From Singapore Goes Viral: When Is Cheryl’s Birthday? April 15, 2015 at 12:00AM http://nyti.ms/1FLIJ4E The New York Times