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Mathematics
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anonymous
  • Member for 9 years, 1 month
  • Last seen more than 3 years ago
  • New York, United States
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29
Visually stunning math concepts which are easy to explain
Jul 1, 2017
16
Variation on Pythagoras: If $a^2 + b^2 = c^2$, then $a + b \leq c\sqrt{2}$
Jun 19, 2015
15
Is there any simple trick to solve the congruence $a^{24}\equiv6a+2\pmod{13}$?
Jun 25, 2015
12
If it took 10 minutes to saw a board into 2 pieces, how long will it take to saw another into 3 pieces?
May 27, 2016
11
Find all strictly increasing functions on positive integers such that $f(f(n))=n+2$
Aug 13, 2017
9
The likelihood of being an accountant vs being an accountant and a plumber [duplicate]
Jun 20, 2015
7
Show that, for any two integers $a$ and $b$, at least one of the expressions $a^3, b^3, a^3+b^3$ or $a^3-b^3$ will be divisible by $7$.
Aug 26, 2017
6
Examples for Hilbert's Quote
May 30, 2016
6
Can I use my powers for good?
Jun 18, 2015
5
Find all functions for $x+f(\frac1x) = 2f(x)$
Aug 13, 2017
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