TS Police SI Mains 2018 Paper 3

Question Numbers: 140-142
To answer the question, consider the following information.
Given that
U = {1, 2, 3, ..., 500}
A = the set of all multiples of 6 in U,
B = the set of all multiples of 15 in U and
C = the set of all multiples of 10 in U.
Let |S|, denotes the number of elements in a set S. Then