Select the correct answer from each drop-down menu. A jeweler is choosing three stones for a ring from a selection of 10 diamonds, 10 rubies, 10 sapphires, and 10 emeralds. Calculate the total amount of combinations possible and the probability that the jeweler chooses three diamonds for the ring. Assume all stones are equally likely to be chosen. There are ring combinations possible. The probability the jeweler chooses three diamonds for the ring is