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Question 152
In the following Venn diagram, the rectangle represents cars, the circle represents bikes, the triangle represents planes. and the square represents helicopters
Select the option that represents the sum of the number of cars that are bikes as well as planes and number of helicopter that are bikes but neither cars nor planes.
Solution
The number of cars that are bikes as well as planes would be the area of intersection of the rectangle, circle and the triangle, which would be 73.
The number of helicopters that are bikes as well but not cars or planes would be the intersection of the square and circle only, not including the triangle or the rectangle; that would be 12.
The sum of these two values would be $$73+12=85$$
