Others could have calculated: 4 - 4 = 0, then 0 ÷ 4 = 0, then 0 x 2 = 0, giving them an incorrect final answer. This type of math puzzle regularly goes viral on social media platforms.

“The answer would be 42.5, though, if done at an age appropriate grade." [h/t: Pop Sugar] A version of this story originally ran in 2018; it has been updated for 2022.