Question

The train station runs trains every 30 minutes. Find the probability that a passenger who arrives at a random time will not have to wait more than 20 minutes. A. 1/3 B. 1/2 C. 2/3 D. 25/30

Answer 1

$|\Omega|=30\\ |A|=20\\\\ P(A)=\dfrac{20}{30}=\dfrac{2}{3}\Rightarrow \text{C}$