(b) When we get 1, number of positive divisors are 1 When we get 2, number of positive divisors are 2 When we get 3, number of positive divisors are 2 When we get 4, number of positive divisors are 3 When we get 5, number of positive divisors are 2 When we get 6, number of positive divisors are 4 Hence range of random variable X is {1,2,3,4}