1) A survey is conducted among 125 people of india.Among them 25 people have neither a valid visa nor a valid passport and 70 people have a valid visa. A) 30 B) 40 C) 70 D) 50 Answer: Option AExplanation:Let us assume that the people who have only valid passport=x From the diagram, people with a valid visa+people with only a valid passport+none=125 $\Rightarrow 70+x+25=125$ $\Rightarrow x=30$
