Question

Six is called a perfect number because its factors (not including 6) add up to itself. Eg. 1+2+3=6. How many perfect numbers are there in the numbers between 20 and 30.

Answer 1

well try to find factors of numbers between 20 and 30
for example i know that 28 is a perfect number because
28=1+2+4+7+14

Answer 2

The no ending with 2,3,7,8 are never a perfect square so . the no. ending with 2,3,7,8 btw 20 are nt perfect square

Answer 3

@HelpMePlease!!!
can u find factors of 24?

Answer 4

Thank you mukushla, I believe that you are correct saying that 28 is a perfect number.

Answer 5

welcome