A deceptively simple equation — 40 + 40 × 0 + 1 — has been circulating widely online, with three answer choices and most people picking the wrong one. The correct answer is 41, and the reason comes down to a rule taught in every middle school math class.
In brief
- —The riddle: 40 + 40 × 0 + 1 — three choices, one right answer
- —Most people instinctively get it wrong
- —Order of operations (PEMDAS/BODMAS) gives 41
The puzzle that is tripping up thousands of people online
The equation looks almost too easy at first glance: 40 + 40 × 0 + 1. Three answer options are presented, and readers are asked to pick the correct one before scrolling to the solution.
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