Question

In a class of 140 students numbered from 1 to 140. All even numbered students opted

Mathematics course those whose number is divisible by 3 opted physics course & those whose
number is divisible by 5 opted chemistry course. The number of students who did not opted any
of three courses is​

Answer 1

Explanation:

Let m denotes maths

P denotes physics

C denotes chemistry

n(M) = 70, n(P) = 46, n(C)

70+46=106

No. of students not opted for any course = 140 – 102 = 38