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Activities

Number guessing: Pick a secret number between 1 and 60 or between 1 and 125 and choose the correct link below:
- 1--60 Number guessing
- 1--125 guessing (plus a bonus on how colors are represented in computers).
Indicate which of the six or seven number grids include your number, and your number can be "predicted". Then you can learn the secret and theory behind it.
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