This quick math puzzle is designed to catch anyone who reads the expression from left to right without using the correct order of operations.
The problem is: 10 + 10 × 0 + 5.
The correct answer is 15.
Multiplication must be completed before addition. Start with 10 × 0, which equals 0. The expression then becomes 10 + 0 + 5. Adding those remaining numbers gives 15.
So the full calculation is: 10 + (10 × 0) + 5 = 10 + 0 + 5 = 15.
These short arithmetic puzzles are easy to misread because the numbers themselves are simple. The challenge is remembering that multiplication and division come before addition and subtraction unless parentheses change the order.
