Question

a survey of 200 students was taken. it was found that 160 students watched sports

Answer 1

Answer:

the number of students watched sports is 160 members

and not watching sports is 40 members

Answer 2

Complete Question:

In a survey of 200 students of a school it was found that 160 students watched sports and 120 watched movies. 90 students watched both sports and movies. What is the number of students who watched only sports or only movies?

Answer:

The answer is 100 students.

Step-by-step explanation:

Step 1:

Given information:

Students watching sports = n(S) = 160

Students watching movies = n(M) = 120

Students watching sports and movies = n(S∩M) = 90

Step 2:

Students who only watched sports = n(S) - n(S∩M) = 160 - 90 = 70

Students who only watched movies = n(M) - n(S∩M) = 120 - 90 = 30

Step 3:

Students who watched only sports or only movies = 70 + 30 = 100

Hence, the answer is 100 students.

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