Two fair dice with sides numbered 1 to 6 are thrown at the same time. Find the probability that both dice show the same number.[1]
The table below shows the results of a survey in which 60 students were asked whether they played video games every day during the school holidays and whether they had trouble sleeping at night.
Played video games daily
Played video games not daily
Trouble sleeping
46
2
No trouble sleeping
8
4
Two students were selected at random from the whole group of students. Find the probability that
at least one student had trouble sleeping at night.[2]
neither of them played video games daily nor had trouble sleeping.[1]
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