Willow has a cup of pens on her desk. She has 2 black, 2 blue, 2 red, 1 yellow, 1 green, 1 brown and 1 orange. Without looking, what is the probability of Willow selecting a red pen?
There are a total of 10 pens on Willow's desk, and 2 of them are red.
Therefore, the probability of Willow selecting a red pen without looking is 2/10, or 1/5, which is equivalent to 20%.