6 PROBLEM QUESTIONS WITH SETS - VENN DIAGRAM
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Subscribe to the channel and ask me your questions! =] ▶ Want to support the channel? =D PIX: [email protected] PDF sheet: https://drive.google.com/open?id=1W1I... Problems with Sets - Venn Diagram 1. In a school with 100 students, 80 like chocolate ice cream, 70 like vanilla ice cream and 60 like both flavors. How many don't like either flavor? a) 10 b) 20 c) 30 d) 40 e) 50 2. In a survey by a hobby website, it was found that, out of 3700 customers surveyed, 2100 preferred to spend their time with airsoft, 1500 spent their free time with paintball and 250 preferred other hobbies. How many customers responded that they liked both airsoft and paintball? a) 100 b) 150 c) 200 d) 250 e) 300 3. A hotel has 120 rooms, of which: • 63 have microwave ovens; • 77 have whirlpool bathtubs; and, • 25 have neither whirlpool bathtubs nor microwave ovens. The number of rooms in this hotel that have only one of the two items mentioned is: a) 40 b) 45 c) 50 d) 55 4. A survey carried out with students at a certain school revealed that 30 students like mathematics; 60 students like history; 50 like Portuguese; 20 like Portuguese and history; 15 like mathematics and history; 10 like mathematics and Portuguese; 5 like these three subjects; and 40 students do not like any of these three subjects. How many students participated in the survey? a) 140 b) 145 c) 150 d) 160 e) 170 Answer questions 5 and 6 using the text below A market research on the consumption of three brands A, B and C of a certain product presented the following results: A: 48% B: 50% C: 48% A and B: 21% B and C: 24% A and C: 13% None: 5% 5. What percentage of respondents consume all three brands A, B and C? a) 41% b) 93% c) 7% d) 11% e) 17% 6. What percentage of respondents consume one and only one of the three brands? a) 51% b) 37% c) 30% d) 14% e) 13%
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