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raleung2
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A science class must choose 5 out of 16 science fair projects to advance to the county competition. How many different groups of projects could be selected?
 2 years ago
 2 years ago
raleung2 Group Title
A science class must choose 5 out of 16 science fair projects to advance to the county competition. How many different groups of projects could be selected?
 2 years ago
 2 years ago

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amistre64 Group TitleBest ResponseYou've already chosen the best response.0
16 chances on the first pick 15 on the second pick 14, then 13 then 12 ... then its full
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
but, that counts abc as different from bca
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
to weed out the repeats since groups dont care about order we can divide that by 5!
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
16P5  = 16C5 5!
 2 years ago

raleung2 Group TitleBest ResponseYou've already chosen the best response.0
and that equals??
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
you should have material that explains the notation better than I can
 2 years ago

raleung2 Group TitleBest ResponseYou've already chosen the best response.0
ok. then whats the final anseer?
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.1
\[\dbinom{16}{5}\] but that doesn't answer the question, it just restates it in notation
 2 years ago
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