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 36 What is a good book for learning math from the ground up? 14 All positive integer solutions to $\frac{1}{x_1}+\frac{1}{x_2}+\cdots+\frac{1}{x_n}+\frac{1}{x_1 x_2 \cdots x_n}=1$ 13 Inequality: $(x + y + z)^3 \geq 27 xyz$ 10 Produce unique number given two integers 10 Prove that integer $n$ exists such that $n^2$ begins with $201120122013$.

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 +15 Cutting sticks puzzle +10 Simplified nurse scheduling problem +10 One vs multiple servers - problem +10 What is a good book for learning math from the ground up?

### Questions (15)

 79 Cutting sticks puzzle 11 What is the sum of the squares of the differences of consecutive element of a Farey Sequence 8 Count of numbers where both $n$ and $n+1$ have all prime factors less than $x$ 7 Strange factorial identity 6 Constructive algorithm for Minkowski's theorem.

### Tags (83)

 51 number-theory × 14 36 soft-question 39 combinatorics × 20 30 algebra-precalculus × 5 36 probability × 25 24 algorithms × 13 36 book-recommendation × 2 20 statistics × 13 36 reference-request × 2 20 diophantine-equations × 3

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