Pic: This “3 second” maths problem is causing all sorts of headaches on the internet

We’re going to need a pen and some paper.

Remember the primary school maths problem that was doing the rounds a few weeks ago? It was causing all sorts of problems for some people, while others claimed to solve it in just a few seconds – yeah right, you’re not fooling anyone, pal.

"I'll just pretend I got the answer. This is the internet, after all." 

Anyway, there’s yet another maths problem now circulating the internet that’s leaving most people perplexed and questioning life. Business Insider reports that the maths problem in question comes from a global math Olympiad for high-school children in Singapore. Seems simple, right? It probably didn’t even take you 3-seconds, did it? The question is for ‘high school’ kids, after all. Well, if you’re still scratching your head then don’t worry, as plenty of people are in the same boat. So how do you figure it out? Here’s a look at the official solution courtesy of Singapore and Asian School Math Olympiads on Facebook. To be honest, we're still a bit confused...