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Brain teasers are not just simple puzzles and riddles but are a type of game that involves lateral thinking. To solve a brain teaser, one must use a creative, less straightforward thought process to ...

Cheryl then tells Albert and Bernard separately the month and the day of her birthday respectively. • Albert: I don't know when Cheryl's birthday is, but I know that Bernard does not know too. • ...

Hal and Carol accept an invitation to a house party. Hal sees that there will be 30 people attending the party and says to Carol, “I bet you $100 that at least two people will have the same birthday ...