say you’re selecting a DVD to watch. You have a pile of DVDs. Two of “Show A”, t
ID: 2949514 • Letter: S
Question
say you’re selecting a DVD to watch. You have a pile of DVDs. Two of “Show A”, three of “Show B”, and two of “Show C”. What are the odds that you pull “Show C” after pulling “Show A” or Show B” first if you replace the selection back in the pile? What are the odds you pull “Show C” if you remove the first selection from the pile? say you’re selecting a DVD to watch. You have a pile of DVDs. Two of “Show A”, three of “Show B”, and two of “Show C”. What are the odds that you pull “Show C” after pulling “Show A” or Show B” first if you replace the selection back in the pile? What are the odds you pull “Show C” if you remove the first selection from the pile?Explanation / Answer
Odds of an event = P(an event occuring) : P(an event not occuring)
Total number of DVDs = 2+3+2
= 7
If the first one is replaced, odds of selecting show C = 2:5
If first one is removed from the pile, number of DVDs remaining = 7-1
= 6
odds of selecting show C = 2:4
= 1:2
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