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All Change
Imagine you have a handful of 1p coins and 10p coins. Now, total the value of the imaginary coins in your hand. Let's now focus down to a single digit for you to concenrate on. From the total value subtract,let's say, the number of coins in your imaginary handful of change. If this value is a two or three digit number, then add the digits together so that you end up with a single digit.
Concentrate on this final digit then take a look at what this mind-reading computer thinks you are thinking.
