g 25 families live in a neighborhood: 10 families of them each have 1 child, 10 families each have 2 children, 4 have 3 children, and 1 have 4 children. If we pick a child at random, what is the probability that the child comes from a family with 1, 2, 3, and 4 children? (Hint: You need to compute 4 probabilites here. Count the total number of children and how many of them satisfy each requirement.)