Next Number?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?




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In the image given, you can find several triangles. Can you count them all?

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The ages of a father and son add up to 66.
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(3 possible solutions).

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You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

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No Solution

In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki