Instruction (1 of 2)
This test measures your ability to memorise and update information.

First, you will have to memorise one, two or three digits shown simultaneously in different colours. Next, an arithmetic operation (e.g., +4) will be presented in one of the colours of the digits you had to memorise. Apply the arithmetic operation to the digit of the same colour and enter the result. From now on, remember the result you entered (and the respective colour) instead of the original digit.
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