At first glance, this puzzle looks incredibly simple. In fact, many people answer it within seconds. Yet thousands still get it wrong because they rush through the calculation instead of following the correct order of operations.

The secret lies in remembering a basic math rule: multiplication must be completed before addition. Many people instinctively add the first two numbers they see, arriving at 80, then continue calculating from there. That shortcut leads to the wrong answer.

Let’s solve it correctly:

40 + 40 × 0 + 1

First, perform the multiplication:

40 × 0 = 0

Now the equation becomes:

40 + 0 + 1

Next, add from left to right:

40 + 0 = 40

40 + 1 = 41

So the correct answer is:

 41

This type of puzzle isn’t really testing how difficult the math is. Instead, it tests whether you’re paying attention to the rules and resisting the urge to rush. That’s why so many people choose the wrong answer, even though the calculation itself is easy.

The lesson is simple: sometimes the biggest mistakes happen when we assume something is too easy. Taking a few extra seconds to slow down and think carefully often makes all the difference.