LOGIC RIDDLES

Fun Facts (Hints)

Here are a few facts about logical thinking. They may be able to help you in solving a few of these riddles:
  • Logic has a few definitions, but is most known as the study of reasoning.
  • Logic is used everyday in areas like mathematics, computers, and philosophy.
  • The word logic is derived from the Greek word "logos."
  • The creation of the study of logic is often attributed to Aristotle.
  • Aristotle's study of logic has had a tremendous impact on the history of the world.
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    Rope Burn Riddle

    Hint: You can light multiple ends and/or multiple ropes at the exact same time.
    Light both ends of one rope, and only one end of the other rope. This will cause the first rope to burn out in 30 minutes. When the first rope burns out, there will be 30 minutes left on the second rope. So then, light the other end of the second rope, and the rest of it will burn out in 15 minutes. 30 + 15 = 45 minutes.
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    Rooster On Top Of A Roof

    Hint:
    Roosters don't lay eggs, hens do. there is no egg!
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    Drinking Soda Riddle

    Hint:
    Helen is drinking coffee. Logic : People drinking coffee have two Es in their name
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    Pound For Pound Riddle

    Hint:
    Neither, they both weigh one pound.
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    6 Girls Riddle

    Hint:
    7. Each girl has the same brother.
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    Fruit Friends Riddle

    Hint:
    She will always need to give you 5 apples. You both need at least 5 apples to begin with, but apart from that it doesnt matter exactly how many you each have. When she gives you 5 you will have 10 more than her because she will lose 5 and you will gain 5, resulting in a net difference of 10.

    For example, if you each have 25 apples and she gives you 5 of hers, she will be left with 20 and you will now have 30, precisely 10 more than she has.
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    Throwing A Ball Riddle

    Hint:
    What is the easiest way to throw a ball, and have it stop, and completely reverse direction after traveling a short distance?
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    Ready For Takeoff

    Hint:
    They Both Took Of At The Same Time On Different Days
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    Opening Doors Riddle

    Hint:
    His car door
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    Switch Or Stick Riddle

    Hint:
    The answer may surprise you: switch. Due to something called the Monty Hall Paradox, you will statistically have a better chance of making the "correct" choice. The concept is as follows:

    Door 1 Door 2 Door 3

    All have an equal chance to be correct:

    Door 1: 1/3 Door 2: 1/3 Door 3: 1/3

    After choosing Door 1, the remaining two have a 2/3 chance of containing the right choice:

    Door1: 1/3 Doors 2 3: 2/3

    If Door 3 is removed, the probability does not shift to 50:50. Instead, it is:

    Door 1: 1/3 Door 2: 2/3

    Thus, you should switch.
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    Post Your Logic Riddles Below

    Can you come up with a cool, funny or clever Logic Riddles of your own? Post it below (without the answer) to see if you can stump our users.
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