# Mark the correct

Let A be the set of population travels by car(in percentage) and

B be the set of population travels by bus(in percentage).

Then AB is the set of population travels by car and bus and

AB is the set of population travels by car or bus.

Then,n(A)=20 , (B)=50 ,n(AB)=10

n(AB)=n(A)+n(B)-n(AB)

=20+50-10

=60

The set of population travels by car or bus is 60%

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