• Crazy 8s

    Riddle: Using only addition, add eight 8s to get the number 1,000.

  • A drunk man

    A drunk man stands with a cliff one step to his left. He takes steps randomly left and right. Each step has probability p of going left and probability q=1−p of going right. Each step is the same size. If allowed to randomly step indefinitely, what is the probability that the drunk falls off the…

  • 200+ riddles for kids

    200+ riddles for kids

    Got a clever kid? Try one of these riddles for kids. Some are tricky, some are funny and all will get their brains working! What is a riddle? A riddle is a fun type of brain teaser that exists as a question or statement to be solved.  It can be framed in a way that is misleading,…

  • 2358 puzzle

    Using 4 math operationsObtain 16 using 2,3,5,8.All numbers must be used.Each number must be used once.You can put parentheses anywhere.Those are numbers, not digits, for example you cannot combine 2 with 3 to make 23.