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List Question

Coin Arrangement Puzzle

Some digit summation problems

Opening Doors Puzzle

Burnside's Lemma

The Impossible puzzle ("Now I know your product")

Name Drawing Puzzle

Approximating Coins Flips Problem

Messenger Riddle

How to solve infinite repeating exponents

Bidding Item Problem

Formula to this pattern? $1$, $11$, $21$, $1211$, $111221$, $\ldots$

Finding coefficient $a_{1996}$ if $\;\prod_{n=1}^{1996}(1+nx^{3^n})=\sum_{n=0}^m a_nx^{k_n}$

Help find hard integrals that evaluate to $59$?

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