Lottery balls numbered consecutively from one through one hundred are placed in a spinner. If one ball is drawn at random, what is the probability that it will have the number 5 on it exactly once? Pick one:
A) 9/100
B) 1/10
C) 18/100
D) 19/100
E) 1/5
Probability = No of balls with exactly one 1 / total number of balls   = {5,15,25,35,45,50,51,52,53,54,56 to 59,65,75,85,95}/100   = 18/100   Answer is 18/100
<result>C</result>
Lottery balls numbered consecutively from one through one hundred are placed in a spinner. If one ball is drawn at random, what is the probability that it will have the number 5 on it exactly once?