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Brainteaser Tuesday For Cognitive Exercise
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Andie_WebMD_Staff posted:
Don't forget that your brain needs exercise too! Try these mind twisting exercises and share your best guesses below:

  • Using only basic arithmetic operations (+ - x /) can you get 98 using only 7 sevens? Each 7 may only be used once and you must use all 7 sevens. ----> 7 7 7 7 7 7 7.

  • A mother is 21 years older than her son. In 6 years time the son will be 5 times younger than the mother. Where is the father?

  • What are the next two pairs of letters in this list? SO, ND, JF, MA, ??, ??
And, if you've already made it through those questions, here's one last riddle for you:

You have been imprisoned in a castle and your prison guards decide to tempt you with freedom, but at a big risk. They show you 2 doors, each with a guard standing in front, one door leads to the hanging gallows and the other leads directly out the castle and into freedom.

You are told that one guard is a liar, and will always lie and the other guard will speak only the truth.

You have no idea which guard is which, or what door is what. Your prison guards laugh and inform you that you may only ask One question.

Impossible, you think at first, but then you have a moment of inspiration. What question do you ask?
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