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 ...

Math puzzles have a special way of making even the sharpest minds stop and think. A new brain teaser going around online has been challenging people to figure out the pattern hidden in a series of ...

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 ...

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 ...