Question

Find the probability of getting a perfect number when a number is selected from 1 to 30

• A. 1/6
• B. 1/15
• C. 1/5
• D. 1/10

Answer 1

Answer:

B. 1/15

Total number of outcomes= 30 P(getting a perfect number) = 2/30 = 1/15 A perfect number is a positive integer that is equal to the sum of all its positive divisors, except for the number itself Eg : 6, 28, 496