We can’t verify that. Nonetheless, the question is very interesting and it shows how Maths is about thinking out of the box.
What is your answer?
The solution: imagine you are retrieving your car at the carpark. Instead of walking straight to the car, walk from the other direction.
And this is what you see. The answer is very clear now, right? It is #87.
It is a skill to solve Maths questions and it can get very philosophical.
Like how we approach life, sometimes the answer is right in front of us if we change our perspective or just start thinking critically for a moment. If we insist on holding on to the norms or refuse to change our mindset, we may never get the answer.