Jon Haussmann's Feed

New

There are 15 (not necessarily distinct) integers chosen uniformly at random from the range from 0 to 999, inclusive. Albert then computes the sum of their units digits, while Bob ...

by Rohan Patila

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 5 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Jon Haussmann

Posts

Choosing Integers

An algebra problem by suresh jh

What is the largest radius of the circle?

Website Issues

100 followers problem

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.