Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge ...

The missing number is 1,620. The digits in the tens places (green in the figure below) of the numbers in columns 1, 2, 4 and 5 are added together. The total value is represented by the digits in the ...

Test your brain power! You have an IQ above 140 if you can solve this math puzzle in 11 seconds or less. Go ahead and test ...

Optical illusions and visual puzzles are all the rage these days due to their ability to enthrall social media users. These brain teasers improve cognitive functions and are a fun way to pass the time ...

Puzzles9 shared a brain teaser with three pentagons, each with a set of five numbers. The middle pentagon is missing a number. To fill in the missing number, you must figure out the relationship ...

A math puzzle is a type of brain teaser that tests the reader's critical thinking and problem-solving skills by challenging them to solve a problem. These challenges have the potential to boost ...

There’s an old puzzle that requires the solver to form as many whole numbers as possible, starting with 1, using only the digit 4 exactly four times, together with ordinary arithmetic and algebraic ...