In a survey of 95 resorts, it was found that

30 had a spa.

57 had a fitness center.

35 had achildren's club.

13 had a spa and a fitness center.

9 had a spa andchildren's club.

17 had a fitness center andchildren's club.

6 had all three features.

a) How many of the resorts surveyed had only aspa?

b) How many of the resorts surveyed had exactly one of thesefeatures?

c) How many of the resorts surveyed had at least one of thesefeatures?

d) How many of the resorts surveyed had exactly two of thesefeatures?

e) How many of the resorts surveyed had none of thesefeatures?