In carrying out a survey of the efficiency of lights, brakes and steering of motor vehicles, 100

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In carrying out a survey of the efficiency of lights, brakes and steering of motor vehicles, 100 vehicles were found to be defective, and the reports on them were as follows:

no. of vehicles with defective lights = 35 no. of vehicles with defective brakes 40 no. of vehicles with

Use a Venn diagram to determine

(a) How many vehicles had defective lights, brakes and steering;

(b) How many vehicles had defective lights only.

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