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 ...

Solving such puzzles within a tight timeframe not only measures your problem-solving capabilities but also enhances your mental agility and speed. They require you to spot patterns, make swift ...

Math puzzles that involve finding the missing number are fascinating challenges that exercise the mind and stimulate logical thinking. These puzzles often present a grid or sequence of numbers with ...

For children who find math difficult or frustrating, or who just like to be challenged, there are many cool math games online to play for free. But are they useful? Research shows that the brain’s ...