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?
The total number of pens Willow has is 10, and the number of red pens she has is 2.
Therefore, the probability of Willow selecting a red pen without looking is 2/10, which simplifies to 1/5 or 20%.