This problem went viral in Japan after a study found 60 percent of 20 somethings could get the correct answer, down from a rate of 90 percent in the 1980s.
The problem
What is 9 – 3 ÷ 1/3 + 1 = ?
What do you think the answer is?
We explain the correct answer by using the order of operations.
Get an explanation of the solution
