Thomas Redding

1. You need to find the underlying rule that unites all numbers in each set but one.

2. For this specific puzzle, think about number properties.

(PARTIAL SOLUTION FOLLOWS)

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3. In the first set, all numbers are odd but one.

4. In the second set, all numbers are even but one.

5. In the third set, all numbers are prime but one.

(SOLUTION FOLLOWS)

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6. Select 10, 19 and 1, then turn the dial.