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These problems are mostly math-related. That's not to say that they're all straightforward. You'll still need to flex your noggin to figure them out!

Latest: Jeopardy style

Answer: To get the largest N-digit prime one only needs to subtract N from 10^N.

Jeopardy style question: What is N?

Your task : evaluate N.

Submitted on 2018-09-23 by Ady TZIDON

Page 1 of 120

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A formal proof requested | Rating: 3.00
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Sum of reciprocals |
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