Part 1. Definition
In this task, you need to provide the correct option for a given problem on probability from the provided options.
Part 2. Example
Problem: in a throw of a coin find the probability of getting a tail ? 
Options: a ) 1 / 2 , b ) 1 / 3 , c ) 1 / 4 , d ) 2 / 5 , e ) 2 / 7
Answer: a
Explanation: "s = { h , t } e = { t } p ( e ) = 1 / 2 answer is a"
Part 3. Exercise
Problem: there is a 5 % chance that tigers will not win at all during the whole season . there is a 5 % chance that federer will not play at all in the whole season . what is the greatest possible probability that the tigers will win and federer will play during the season ? 
Options: a ) 55 % , b ) 60 % , c ) 70 % , d ) 72 % , e ) 95 %
Answer:
e