Whenever you look at a clock, do you always see the same time? It might be 11:11 or 3:33. Maybe repeating numbers have made their way into other aspects of your life, such as a receipt that totaled ...

1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? If you're trying a bunch of arithmetic operations to make the numbers work, you're ...

A tricky number puzzle has left thousands of people scratching their heads online, with experts claiming that only a genius ...

A pattern or a sequence is a set of numbers that are connected in some way. All sequences have a rule. For example, sometimes the numbers might count on by 5 each time, other times they might be ...

If you’re someone who loves a good brain teaser, you’ll want to put your mind to the test with this curious number puzzle. At first glance it might look like just another string of digits, but there's ...

The seq command is handy for generating number sequences on Linux. It requires at least one number as an argument and, given that, it will provide all the numbers from 1 to whatever number you specify ...

What is your favorite number? For many people, it may be an irrational number such as pi (π), Euler’s number (e) or the square root of 2. Even among the natural numbers (positive integers), there are ...