A survey of 400 students in a university shows that 100 are smokers and 150 as chewers of gum, 75 are both smokers and gum chewers. Find out how many students are neither smokers nor gum chewers.
Answer
Problem 8: Set
A survey of 400 students in a university shows that 100 are smokers and 150 as chewers of gum, 75 are both smokers and gum chewers. Find out how many students are neither smokers nor gum chewers.