This maths puzzle for kids has been leaving adults confused.

We all know that it’s important to keep our bodies healthy by exercising regularly, but did you know you also have to give your brain workouts? Keeping your brain active is vital for reducing the risk of degenerative diseases such as dementia and improving connections between your brain cells.

One of the best ways to give your brain a workout is through brainteasers and other puzzles, which on top of improving your memory and…