This quick math puzzle looks simple, but the multiplication by zero is where many people make a mistake.
The expression is:
3 + 9 × 0 + 4
To solve it correctly, follow the standard order of operations. Multiplication comes before addition.
Start with:
9 × 0 = 0
Now the expression becomes:
3 + 0 + 4
Then complete the remaining addition:
3 + 4 = 7
So the correct answer is:
7
A common mistake is to calculate from left to right and add 3 + 9 first. Others see the ×0 and assume the whole expression becomes zero. But only the 9 is being multiplied by zero.
That small detail is what makes this easy-looking equation surprisingly good at catching people who answer too quickly.
Answer: 7.
Did you get it right on your first try?


