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 ...

An amusing parlor trick is performed as follows. Ask spectator A to jot down any three-digit number and then to repeat the digits in the same order to make a six-digit number (e.g., 394,394). With ...

Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge that went viral online has math lovers excited. The puzzle asks users to ...

I like sudoku as much as anyone, but a change of pace might be nice occasionally. Enter Sweet 16, a new math puzzle game. As the name suggests it involves the numbers 1 through 16, and it's a bit like ...

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Are you ready for this math riddle test? Okay, in today’s math riddle, a series of numbers is used as logical reasoning to test your mental ability. So, can you prove you're in the 1% league with an ...

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 ...

Draw four lines beginning and ending at the gray points to break this square into pieces that can be rearranged into five identical squares. Bonus: Suppose you can use any number of lines that begin ...