Of 50 students, 18 speak German, 31 speak Italian and 12 do neither. How many speak German but do not speak Italian?
Answer and explanation
Correct answer: B. 7
- Step 1: First find those doing both: 18 + 31 - (50 - 12) = 11. Step 2. Those doing only the first = 18 - 11 = 7. Answer: 7. Why not the others: 18, 20 and 5 each come from skipping the overlap or the 'neither' group in the working.
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