Three

Use 0, 0 and 0 to make 6
Use 1, 1 and 1 to make 6
Use 2, 2 and 2 to make 6
Use 3, 3 and 3 to make 6
Use 4, 4 and 4 to make 6
Use 5, 5 and 5 to make 6
Use 6, 6 and 6 to make 6
Use 7, 7 and 7 to make 6
Use 8, 8 and 8 to make 6
Use 9, 9 and 9 to make 6
Use 10, 10 and 10 to make 6

You can use the numbers and any mathematical function such as sqrt() (√). You are not allowed to introduce other numbers.

An example of a solution could look like: 3×3-3 = 6

A new puzzle is published at least once a month on Friday. You can check your solution here.

Did you like this puzzle? The good news is I wrote a booklett with dozens of these puzzles, you van find it here.

Labeled numbers

Four of the five numbers below have a label consisting of three letters. Every letter stands for a property of the associated number.

Difficulty: ****/*****
The question is: what label belongs to the number in the middle?

A new puzzle is published at least once a month on Friday. You can check your solution here.

Did you like this puzzle? The good news is I wrote a booklett with dozens of these puzzles, you van find it here.