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Math Prediction

math formula
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 procedure?   (If not...the answer is here)

Watch the video.

PS :
Try this other prediction trick too!




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