CAYLEY 2016 Problem 12

Alejandro has a box that contains 30 balls, numbered from 1 to 30. He randomly selects a ball from the box where each ball is equally likely to be chosen. Which of the following is most likely?

Answer Choices
A. He selects a ball whose number is a multiple of 10
B. He selects a ball whose number is odd
C. He selects a ball whose number includes the digit 3
D. He selects a ball whose number is a multiple of 5
E. He selects a ball whose number includes the digit 2