A bag of 100 tulip bulbs purchased from a nursery contains 20 red tulip​ bulbs, 30 yellow tulip​ bulbs, and 50 purple tulip bulbs.
​(a)
What is the probability that a randomly selected tulip bulb is​ red?
​(b)
What is the probability that a randomly selected tulip bulb is​ purple?
​(c)
Interpret these two probabilities.
​(pt2) The probability that a randomly selected tulip is red is ___.
​(Type an integer or a decimal. Do not​ round.)