Question
Forty-seven pupils sat for a test. Thirty-five of them answered Question 1. Twenty-three of them answered Question 2. Sixteen of them answered both Question 1 and Question 2. How many pupils did not answer either or both Question 1 and Question 2?
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Forty-seven pupils sat for a test. Thirty-five of them answered Question 1. Twenty-three of them answered Question 2. Sixteen of them answered both Question 1 and Question 2. How many pupils did not answer either or both Question 1 and Question 2?