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Take a moment to study these faces. You'll need to remember them for the next question. HINT: During this game, you can always click BACK if you need to refresh your memory.

Fact Lab

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Continue to play the quiz afterwards
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Interesting fact:

Sleep helps our memories. A study found that people who were learning finger movements (similar to learning a tune on the piano) were able to recall the movements better after 12 hours of sleep. If you’re ever studying for a big exam, it’s better to get some rest than pull an all nighter!