New posts in Problem Solving

A challenging problem on continuity-MADHAVA-2020.

Solve binomial coefficient equation

Find the largest positive integer which can divide the sum of any five such numbers.

How can we solve an equation with two variables, when only given one equation?

How to find all positive integers whose square ends in $444$?

Motivation for this solution to a British olympiad problem

A closed form for: $\int_{0}^{\infty} \frac{1}{(x-\log x)^2}dx$

Find $a,b,c,d$ such that $2^a + 2^b + 2^c = 4^d$

Why aren't these two solutions equivalent? Combinatorics problem

Soft question- The Bashing Technique and Other powerful techniques for Olympiads