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We will be featuring different members of the Brilliant community, so that you can get to know them better. For the twelfth issue, we are featuring Xuming Liang, who recently ...

\(\text{Hello Brilliant Guys!}\)

Let's celebrate this moment, the number of students in the Brilliant Classes has reached to 800!

\(\LARGE \text{WOOOOHOOOOOOOO!}\)

A rather long number ends with an 8. If this digit, i.e. the 8, is shifted to the front position, we obtain a number which is twice the original ...

Find the smallest positive integer \( k \), such that for all positive integers \( n \), a \( kn \times kn \times kn\) Rubik's cube can be used as a Rubik's cube ...

You are given a list of the first one trillion positive integers and you must perform the following steps:

Step 1) Pick any two numbers at random from this list ...

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