New posts in problem-solving

Show me some pigeonhole problems [closed]

Prove $|a+b|+|a-b| \geq |a|+|b|$

Probability of event with repetition [closed]

Trying to apply mathematics into a real-life context

Two fluids flowing perpendicular in thermal contact with a Wall [Help to mathematically model]

Finding number of distribution without using computer algorithm

Teaser or fun calc equation to surprise husband (physicist/EE) at work

Show divisibility by 7

Prove that this particular sequence contains an infinite number of sixes

Extraneous solution when solving $x^2+x+1=0$ by getting $x^2=1/x$

An Integral involving $e^{ax} +1$ and $e^{bx} + 1$

Why aren't these two solutions equivalent? Combinatorics problem

Find a bug under 6 tiles

Solving $\sqrt{7x-4}-\sqrt{7x-5}=\sqrt{4x-1}-\sqrt{4x-2}$

Maximum of $a_1 \cdot a_2 \cdots a_n$ given $a_1 + \cdots + a_n = 1000$?

Prove that $\sqrt{n} \le \sum_{k=1}^n \frac{1}{\sqrt{k}} \le 2 \sqrt{n} - 1$ is true for $n \in \mathbb{N}^{\ge 1}$

Induction Proof: Formula for Sum of n Fibonacci Numbers

Is "problem solving" a subject to be taught?

How do you create a nonlinear game that the player can always win?

Probability question involving throwing a die until we get a certain result