33 Is it possible to shorten the solution for this 2014 RMO question? 21 What is the probability that the first head will appear on the even numbered tosses 16 Need Help : Proving polynomials are continuous, without circular reasoning 15 Find $\prod^\infty_{n=1} (1 - 10^{-3* 2^n})$. 14 Is there a name for categories whose objects are sets?

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 +25 Finding the dual basis after a linear transformation +10 Polynomial of $n-1$ degree +10 How can I find out the exact number of positive, negative or real roots of a single-variable polynomial equation? +10 Factorise $x^n + 1$

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 106 algebra-precalculus × 38 58 proof-verification × 16 97 linear-algebra × 94 57 probability × 28 74 elementary-number-theory × 31 52 number-theory × 36 68 combinatorics × 41 52 contest-math × 12 61 real-analysis × 23 47 functions × 33

### Bookmarks (3)

 5 Alice and Bob take turns to remove numbers from a list 2 Prove 1 + 4 Product of fibonacci numbers is a perfect square 0 A game with coins