Q:
      
      
         
            
Main street high school has 10 members on its football team and 14 members on its science club. 5 members at the school belong to both the football and science teams. How many students belong to only science club team or football team?
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) 9         
         
Explanation: Given that,
Members in football team = n(f) = 10
Members in science club = n(s) = 14
Members in both football team and science club = n(f ^ s) = 5
 
Then, Members in only football team = n(F) = 10 - 5 = 5
Members in only science team = n(S) = 14 - 5 = 9

 
Hence, members in only football or science team = n(FUS) = n(F) + n(S) - n(f^s) 
= 9 + 5 - 5
= 9.
 
Hence, many students belong to only science club team or football team = 9.
       
      
      
      
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