1: See if you can figure out Cheryl 's birthday , the Singapore logic problem that 's got the Internet twisted into knots . 2: The puzzling problem went viral after Singapore television host Kenneth Kong posted it to Facebook . 3: A logic question about  Cheryl 's birthday  goes viral .
1: Cheryl 's birthday , the Singapore logic problem that 's got the Internet twisted into knots 2: The puzzling problem 3: A logic question about `` Cheryl 's birthday