A perfect number n is a number which is equal to the sum of its divisors.…
2023
A perfect number n is a number which is equal to the sum of its divisors. Which of the following is a perfect number?
- A.
9
- B.
6
- C.
15
- D.
21
Attempted by 69 students.
Show answer & explanation
Correct answer: B
6 is divisible by 1, 2 and 3.
And, 6 = 1 + 2 + 3.