AP ICET 2016 Paper

Question : 96 of 200

Marks: +1, -0

Out of a total of 750 students each student studies at least one of the two subjects, Physics and Mathematics. If 40% of them study Mathematics and 70% study Physics, then the number of students who study both is

Validate

Solution:

We have
n (A ∩ Β) = n (A) + n (B) – n (A ∪ Β)
∴ % of students studying both physics and maths

=70%+40%–100%=10%

10% of 750 = 75

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