Tricky Mathematical Brainteaser #11: Can You Solve It?

Are you a puzzle master? A math genius? Then you are going to love this series of mathematical brainteasers. All you have to do is find the missing number - sounds easy right? Well give it a go and tell us how you do. 

In this challenge there are four numbers given in each square which relate to each other with mathematical relationships. All you have to do is find the pattern and solve for the missing number. 

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How did you go? Did you figure it out? We have the answer below so that you can double check if you are right but don't cheat if you havent worked it out yet! 

Test your friends and SHARE this challenging brainteaser with your friends and family!