Question

A is the set of factors of 6; B is the set of prime factors of 6; C is the set of proper factors of 6; D is the set of factors of 3. Which of the following is true?
a. A = B
b. A = C
c. B = C
d. C = D

Answer 1

Answer:

The number of members of a set is often written as |S|, so when S has n members we can write:

|P(S)| = 2n

Example: for the set S={1,2,3,4,5} how many members will the power set have?

Well, S has 5 members, so:

|P(S)| = 2n = 25 = 32