Today’s challenging puzzle is to find the missing number in a sequence of numbers from 1 to 53. So, if you think you're a genius with an IQ level of 140 or higher, then find the missing number in just ...

Five years ago on this day, a seemingly straightforward puzzle took the world by storm. A picture circulating online challenged people to determine the missing number from what looked like a simple ...

Dr. Emma Chen, a renowned mathematician, has set the international math community abuzz with her latest numerical sequence puzzle. This challenging brain teaser has stumped even the most brilliant ...

When you estimate a number you decide approximately, or roughly, how big that number is. To estimate accurately, you need to have a good understanding of the value and order of numbers. A number line ...