Q&A for How to Do a Number Trick to Guess Someone's Age

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  • Question
    This doesn't make sense. How does 17x50 equal 850? I thought it was 400.
    Community Answer
    Check your multiplication again. 17x50 does equal 850.
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    Not Helpful 145 Helpful 197
  • Question
    Could I also subtract their birth year from the current year to determine their age?
    Alexis Styles-Rainies-Thompson
    Community Answer
    No. It’s either current year if their birthday has passed, or last year if their birthday hasn’t passed yet.
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    Not Helpful 73 Helpful 58
  • Question
    Is this just a trick or does it really help you guess someone's age?
    Community Answer
    If done correctly, this should actually help you determine a person's age.
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    Not Helpful 54 Helpful 84
  • Question
    How do I do the number trick to find out when I was born?
    Community Answer
    You would still need to know your birth year in order to perform the trick.
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    Not Helpful 51 Helpful 29
  • Question
    I did this trick, and I got the wrong answer. I'm sure I did all the steps correctly. How can this be?
    I_l1ke_gam3s
    Community Answer
    You must have made a miscalculation. Check your work to see if you calculated correctly.
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    Not Helpful 2 Helpful 0
  • Question
    I made absolutely sure that I did the first solution correct and the final answer was 6 years off from their actual age.
    Community Answer
    Method 1 above does work. Step 5 is a little tricky. The number you use in that step changes every year! (Note the explanation at the bottom of Step 5.) Be sure you're using the right number! Try the method on yourself!
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