This quick math puzzle looks easy, but it catches people who calculate strictly from left to right: 10 + 10 − 5 × 0.
The correct answer is 20.
According to the standard order of operations, multiplication comes before addition and subtraction. So the first step is 5 × 0, which equals 0.
The expression then becomes 10 + 10 − 0. That gives 20.
The full calculation is therefore: 10 + 10 − (5 × 0) = 20.
The zero is what makes this one deceptive. Once multiplication is handled first, the rest of the puzzle becomes straightforward.
