📊 Pandas
Q. Which method is used to replace multiple values in a DataFrame at once?
  • (A) fillna()
  • (B) replace()
  • (C) update()
  • (D) substitute()
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✅ Correct Answer: (B) replace()

Explanation: The replace() method can replace multiple values at once by passing a dictionary mapping old values to new values.

Explanation by: Sikhar Chaudhary
The replace() method can replace multiple values at once by passing a dictionary mapping old values to new values.

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