GATE Mechanical Engineering (ME) 2018 Shift 2 Solved Paper

Question : 7 of 65

Marks: +1, -0

Forty students watched films A, B and C over a week. Each student watched either only one film or all three. Thirteen students watched film A, sixteen students watched film B and nineteen students watched film C. How many students watched all three films?

Validate

Solution:

Total student

=40

13-x+16-x+19-X+x=40

Students watches all three movies,

x=4

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