Brain Teaser Of The Week

  • From: "R. Chartrand" <pedagonet@xxxxxxxxx>
  • To: "teaseroftheweek@xxxxxxxxxxxxx" <teaseroftheweek@xxxxxxxxxxxxx>
  • Date: Sat, 8 Dec 2012 05:46:27 -0800 (PST)

Total Predictions
Procedure:
Look at the image
Choose a number then circle it.
Cross out all numbers that are in the horizontal and vertical columns of your 
chosen number.
Choose and circle another number.
Again cross out all numbers that are in the horizontal and vertical columns of 
your selected number.
Choose and circle another number.
Now cross out all numbers that are in the horizontal and vertical columns of 
your selected number.
Circle the last remaining number
Add your four chosen numbers.
Your total is 86.
Question: Can you explain the magic formula?
 
Click here
http://www.pedagonet.com/Maths/totalprediction.html
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