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44 votes
Some please help with this problem, I have tried multiple time but still couldn't get the right answer. :(

Some please help with this problem, I have tried multiple time but still couldn't-example-1
User Sababado
by
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1 Answer

23 votes
23 votes

Given data:

Total number of songs = 8

Rock songs = 3

Reggae songs = 2

Country songs = 3

Probability = Number of favorable outcomes / Total number of outcomes

To find:

When song is selected randomly to play first song and then second song from remaining ones ,

Probability when both the songs are from Reggae songs,


\begin{gathered} P\text{ =}(2)/(8)*(1)/(7) \\ \text{ = }(2)/(56) \end{gathered}
P=(1)/(28)

Thus , the probability is 1/28.