You have 20 shirts in your closet. 4 blue, 7 red , 3 green and 6 black. You pick one without looking. What is the probability that you pick a blue or black shirt ?
A) 1/4
B) 1/2
C) 3/50

Respuesta :

The answer is B).

4 + 6 = 10

10/20 = 1/2

Hope this helps!