For two numbers this means multiplying them together and taking the square root.

= 71% (nearest whole number) Using this algorithm showed that Alice and Bob are 71% compatible.

Alice’s score: Over the two questions Alice answered a little important and somewhat important meaning these questions are worth 11 points to her.

Bob answered as Alice wanted on both questions meaning that Bob got 11/11 and that he is 100% satisfactory to Alice.

Bob’s score: Over the two questions Bob answered very important both times meaning these questions are worth 500 points to Bob.

In the future there are going to be more and more jobs for people who can use maths in a smart way to improve the way people do things.Different sites have different methods for matching people, but the American dating site OKCupid particularly likes to boast about its use of mathematics in order to match people. Because OKCupid is so convinced that their use of mathematics is what helps them to be successful, they are very open about their algorithm.Some other sites might be more secretive about their methods, as they want to keep their competitive edge.You might already be wondering about how effective the algorithm is and whether it could be improved.There is a lot of human psychology involved – for example would Alice have really been honest that she isn’t tidy?