The venn diagram below shows the number of stud... - WAEC Mathematics 1989 Question
The venn diagram below shows the number of students who studied Physics, Chemistry, and Mathematics in a certain school. How many students took at least two of the three subjects?
A
165
B
160
C
155
D
135
correct option: b
At least 2 subjects = 30 + 45 + 75 + 10 = 160 students
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