Think you're good at mental arithmetic? Be careful… this little test fools almost everyone.
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mathematics
At first glance, this operation seems very simple.
Nothing complicated, just a few numbers:
8 – 4 – 1 × 3
Lots of people watching this…
and within a few seconds he gives an answer.
Without thinking.
Without checking.
Simply because it seems obvious.
And this is where the trap begins.
Because our brain likes to work fast.
Sees numbers, connects calculations directly from left to right…
and he thinks he's right.
But he actually forgets one basic rule.
A rule we all learned in school…
but which we forget when we want to answer too quickly.
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mathematics
There are priorities in mathematics .
Not all operations are performed in the order in which they occur.
