Among 120 athletes at my school, the 3 most popular sports are baseball (played by 57 of them), basketball (played by 52 ), and soccer (played by 41 ). If 5 athletes play all three sports and 10 play none of them, how many athletes play exactly 2 of the 3 most popular sports?
A.
25
B.
30
C.
35
D.
40
Exam No：2020 First Round Grade 7 Year：2020 Question No：20
Answer:
B
Knowledge points:
G7 - Combinatorics - Set Logic & Venn Diagrams
Solution:
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