Mathematics: Your car stereo can be programmed to hold six radio stations of your choice. there are 9 stations you really like. how may different ways can you program your six buttons with different collections of your favorite stations?

Your car stereo can be programmed to hold six

Ответ:

nevelle

16.01.2022

Combinations

nCr
you have n items and how many ways are there to chose r of them

nCr= $\frac{n!}{r!(n-r)!}$
remember than n! means n times all numbers before like
3!=3*2*1, 5!=5*4*3*2*1
9 stations, how many ways are there to chose 6 of them
9C6= $\frac{9!}{6!(9-6)!}$ =
$\frac{9!}{6!(3)!}$ =
$\frac{9*8*7}{3!}$ =
$\frac{9*8*7}{3*2*1}$ =
$\frac{3*4*7}{1}$ =
84

84 ways

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Ответ:

daelinrobinson

26.03.2022

Mathematics

Shun nsonekdbelfnrohgdl hdigsirfbitfhf&;84844858585748483617182;95995828181828:!!,4&8//92923

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Your car stereo can be programmed to hold six radio stations of your choice. there are 9 stations you really like. how may different ways can you program your six buttons with different collections of your favorite stations?

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