Question

3.1
Which one of these is a perfect number?
a) 12
b) 20
c) 28
d) 32
​

Answer 1

a)12

12 is not a perfect number because the sum of its factors, 1+2+3+4+6 is greater than 12. Numbers like 12 are known as abundant numbers .

Answer 2

Answer:

C) 28

It is the correct answer as 28 is a perfect number