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How many ways can you listen to 3 songs from a CD that has 12 selections?
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I believe SillyBilly got you covered on this one candygirl cx
ok
Badly crafted question, should say something like: How many ways can you **choose** 3 songs from a CD that has 12 selections? And that's: \(\text{}^{12} C _ 3\) recognise that?!
no
lol! so there are 12 ways to choose the first one, right?
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yes
and then 11 ways to choose the second? right?
ok
and for the third song.....
10 ways?
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sure so that's 12 * 11 * 10
....which is \(\text{}^{12} P _ 3\), but you don't recognise that notation, so ignore that bit.... does that 12 * 11 * 10 sort you out??
yes 1320
good. case closed?
yes thanks
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TU
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