12 Jun 2015

How to use a math trick to get a girl's phone number

First, have the girl pull up her calculator app on her smartphone. Then tell her that you are going to write down a prediction number (pick a number between 10,000,000 and 20,000,000. The number doesn't matter). Let her hold onto the prediction number but to not look at it.
Tell her to follow these instructions:
  1. Type out the first 3 numbers of her phone number.
  2. Multiply it by 80
  3. Add 1
  4. Multiply by 250
  5. Add the last 4 numbers.
  6. Add the last 4 numbers again.
  7. Subtract 250.
Tell her to look at the prediction number and when she says it isn't correct ask her to see her phone and the paper. Stall her by making jokes and act like you messed up. While you are doing that, simply divide the number on her calculator by 2 and you will be left with her 7 digit phone number. Enter that number on your phone and call it.
Set the phone on the table in front of her and it should start ringing. Amazement ensues.


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