This uses two secret gimmicks, a Pocket-Writer and an Ostin Clip (which is why I call it the PWO Prediction). To set it up, have a large Ostin clip, containing a colored index card for visibility attached to the top of your whiteboard or pad. The slip should be on the backside of the board. Of course the slip will vanish into the clip as soon as you open it, but nobody knows this (we hope!)
Fold a duplicate card into fourths and record the following three numbers, one per quadrant of the card. The lower left quadrant should be left blank:
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