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OpenStudy (anonymous):
a shop has 7 different smoothies. each day there is a special discount on 3 of the smoothies. how many different smoothie specials could be offered?
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OpenStudy (anonymous):
Assuming the order does not matter, you have a combination of 3 out of 7, that is binom(7, 3) = 7!/(3!(7-3)!) = 35
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