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What is wrong with this proof that \( 2 = 4 \)?

Step A: Let \({ x }^{ {\displaystyle x }^{ {\displaystyle x }^{\displaystyle .^{.^.} } } }=y\). Substituting, we get \({ x }^{\displaystyle y }=y\)

Step B: ...

Let \(a\) be an \(n\) digit palindrome. Let \(f(x) =\) the sum of the digits of \(x\). Given that there are 13 values such that \(a\) is prime and ...

This problem is a slightly harder version of Primey Palindromes.

Let \( f(x) \) be the sum of the digits of \(x\). Let \(g(n) \) be the number of \(n\) digit ...

How well do you think you can estimate something? How good are you at guessing the answers to problems? How fast can you do it? How accurate are your guesses ...

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Greetings, proofathoners! I was recently inducted as a problem writer in the Proofathon contest, and it really is hard work creating quality problems! That's why we would all ...

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