Set-based visual reasoning, region counting.
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Q1 · Venn Diagrams · HARD
In a group of 200 students, 120 study Math, 90 study Physics, 70 study Chemistry, 40 study Math and Physics, 30 study Physics and Chemistry, 25 study Math and Chemistry, and 15 study all three. How many study none of these subjects?
Q2 · Venn Diagrams · MEDIUM
In a survey of 100 people, 60 like tea, 50 like coffee, and 30 like both. How many people like only tea?
Q3 · Venn Diagrams · EASY
In a class of 50 students, 30 play cricket, 25 play football, and 10 play both games. How many students play neither cricket nor football?