Question
26 people surveyed, 19 said they like basketball, 12 said they like football, and 5 said they like both. How many people said they like basketball but not football?
Answers
Reiny
Use Venn diagrams
put 5 in the intersection of the two circles
the basketball circle should have 19, but we have already placed 5 of those,
That leaves 14 in the part of only basketball
So 14 like basketball, but not football
put 5 in the intersection of the two circles
the basketball circle should have 19, but we have already placed 5 of those,
That leaves 14 in the part of only basketball
So 14 like basketball, but not football