Astute, clever, perceptive, shrewd, acute, adept, adroit, clever, deft, quick-witted, quick-study, sharp, shrewd. You could employ the word “genius”, but there are a lot of people who learn easily and easily who aren't geniuses.

Answer:

Astute, clever, perceptive, shrewd, acute, adept, adroit, clever, deft, quick-witted, quick-study, sharp, shrewd.

Explanation:

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