Mark has pair of pants in three different colors, blue, black and brown. He has five colored shirts: a white, a red, a yellow, a blue and a mixed-colored shirt. What is the probability that Mark wears a black pair of pants and a red shirt on a given day?

Answer 1

So he has a (1/3) chance of picking black pants and (1/5) chance of picking the red shirt. Multiply (1/3) times (1/5) which equals (1/15).

Answer 2

He has 3 choices of pants and 5 choices of shirts.
Therefore, the number of possible outfits he can wear = 3 x 5 = 15
Only 1 of these possible outfits is black pants/ red shirt.
Therefore, probability is 1/15.