Question

In a class of 150 students, 40 passed in physics and chemistry, 40 in physics and maths, 30 in maths and chemistry, and 10 students passed in all the three subjects. how many students passed only in maths?

Answer 1

As 40 passed in physics and maths , 30 in maths and chemistry and 10 in all three subjects
ATQ..
Students who passed in maths is.
40+30+10=80 students passed in maths

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