Question
A die is thrown, find the probability of the following event:
A prime number will appear.
Solution
A die is thrown.
∴ The sample space is: S = {1, 2, 3, 4, 5, 6}
n(S) = 6
Event: a prime number shows up.
A = {2, 3, 5} 
n(A) = 3
Hence, 
