Question

What is the probability of rolling a fair die and not getting an outcome less than 2?

Answer 1

The probability is `5/6`. See explanation.

Explanation:

First we can rephrase the task to avoid negation. The term "not to get an outcome less than 2" is the same as: "get 2 or more", so in other words the event is "you get 2 or more". Among all results `1,2,3,4,5` and `6`. only number `1` does not fulfil the requirement, so other `5` results fulfil it.

`A={2,3,4,5,6}`

`bar(bar(A))=5`

`bar(bar(Omega))=6`

so `P(A)=bar(bar(A))/bar(bar(Omega))=5/6`