Damiean Lyons

Does starting over interfere with an already proficient exercise?

If one were to complete & submit an exercise 100% without mistakes, then does it again, but decide to start over on the first question to get a different question, will that revert the proficiency ...

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2. General Khan Academy Questions

Is it possible to lose energy points?

Is there anything that can make a user loose energy points, or is it completely impossible to lose even 1 energy point?

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2. General Khan Academy Questions