What looks like a simple maths problem has left the internet stumped.
Puzzlers have been coming up with two different answers to 6÷2(1+2), The Sun reports, depending on which method they use to solve it.
Brain teaser lovers have been divided in using the PEMDAS and BIDMAS methods.
PEMDAS, which is the more modern equation, stands for parenthesis, exponents, multiplication, division, addition, then subtraction.
Using this route, you should do 1+2, making 3.
The equation then becomes 6÷2(3) and the parenthesis around the 3 means it should be multiplied by what comes before it.
It then becomes 3×3 – making the answer 9.
But this has been disputed by those using the old formation, BIDMAS, which stands for brackets, indices, division, multiplication, addition, and subtraction.
Brain teaser lovers using this method complete 1+2, making 3, and then do 2×3, making 6.
To complete the problem, they do 6÷6, making the answer 1.
This article originally appeared on The Sun and was reproduced with permission