Stephanie has 9 pairs of blue pants, 2 pairs of white pants, 3 pairs of black pants, and 4 pairs of brown pants. If she chooses one pair of pants, what is the probability that they are not brown?

4/18 if there are 9 blue 2 White 3 black and 4 Brown you add them all together and get 18 the probability would be 4 out of 18 because there are four pairs of brown pants out of 18 pants all together

14/18 or about 0.78%