Question
Fifty-seven pupils sat for a test. Thirty-two of them answered Question 1. Twenty-eight of them answered Question 2. Nineteen of them answered both Question 1 and Question 2. How many pupils did not answer either or both Question 1 and Question 2?
4 m

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Fifty-seven pupils sat for a test. Thirty-two of them answered Question 1. Twenty-eight of them answered Question 2. Nineteen of them answered both Question 1 and Question 2. How many pupils did not answer either or both Question 1 and Question 2?