This group tasks allows you to search for arithmetic progressions in the prime numbers. How many of the challenges will you discover for yourself?
A weekly challenge concerning prime numbers.
An introduction to proof by contradiction, a powerful method of mathematical proof.
This black box reveals random values of some important, but unusual, mathematical functions. Can you deduce the purpose of the black box?
Take any prime number greater than 3 , square it and subtract one. Working on the building blocks will help you to explain what is special about your results.
How many divisors does factorial n (n!) have?
A game in which players take it in turns to choose a number. Can you block your opponent?
Make a line of green and a line of yellow rods so that the lines differ in length by one (a white rod)