Example1) An unbiased dice is thrown. What is the probability that the number is Even
Solution: Total number of outcomes possible when a die is thrown = 6, i.e. `S = {1,2,3,4,5,6}`
`:.n(S)=6`
Let `E` = event of getting a number is even
`:.E = {2,4,6}`
`:.n(E) = 3`
`:.P(E)=(n(E))/(n(S))=3/6=1/2`
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