To remember information such as number sequences, your brain uses its short-term memory storage. Your short-term memory has a limited amount of space to store information.

A relatively useless pseudo-random sequence with a period of seven bits is the result, but the point of this circuit is to educate rather than its utility.

Challenge your mind with this brain teaser IQ test! Spot the hidden number '2' among a random sequence in just 5 seconds. Perfect for sharpening observation and thinking skills.