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?

Answer 1

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