Menu
NEWBEDEV
Python
Javascript
Linux
Cheat sheet
NEWBEDEV
Python 1
Javascript
Linux
Cheat sheet
Contact
New posts in Contest Math
Moving from $(0,0)$ to $(5,5)$ without right angles
May 09, 2021
Four Number Theorem : Let $a$, $b$, $c$, $d$ be integers such that $ab = cd$.
May 09, 2021
Method to solve missing numbers
May 09, 2021
Find odd primes $p$ and $q$ such that $(p-1)\mid {3q-1}$ and $(q-1)\mid{3p-1}$.
May 09, 2021
The number of ways to represent a natural number as the sum of three different natural numbers
May 09, 2021
Prove that the sum $ \sqrt{1001^2 + 1}+\sqrt{1002^2 + 1} \ + ... + \sqrt{2000^2 + 1}$ is irrational
May 09, 2021
Solving for positive reals: $abcd=1$, $a+b+c+d=28$, $ac+bc+cd+da+ac+bd=82/3$
May 09, 2021
Find all positive integers $x$ and $y$ for which $\frac{1}{x} + \frac{1}{y} = \frac{1}{p}.$
May 09, 2021
Prove that $\frac{(3 a+3 b) !(2 a) !(3 b) !(2 b) !}{(2 a+3 b) !(a+2 b) !(a+b) ! a !(b !)^{2}}$ is an integer.
May 09, 2021
UC Berkeley Integral Problem: Show that $\int_0^{2\pi} \frac{\min(\sin x, \cos x)}{\max(e^{\sin x},e^{\cos x})}\ {\rm d}x = -4\sinh(1/{\sqrt2})$.
May 08, 2021
« Newer Entries
Older Entries »