Answer:
70 sports enthusiasts enjoy watching synchronized boxing or extreme knitting.
Step-by-step explanation:
We are given the following in the question:
Number of people who enjoyed watching synchronized boxing = 50
Number of people who enjoyed extreme knitting = 40
Number of people who enjoyed both activities = 20
We have to find the number of sports enthusiasts enjoy watching synchronized boxing or extreme knitting.
Formula:
[tex]n(A\cup B) = n(A) + n(B) - n(A\cap B)[/tex]
Putting the values, we get,
[tex]n(A\cup B) = 50 + 40 - 20 = 70[/tex]
Thus, 70 sports enthusiasts enjoy watching synchronized boxing or extreme knitting.
