Mathematics
19.09.2021 15:54
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Can someone answer. there is one problem. there s a picture. you!
Can someone answer. there is one problem. there's a picture. you!
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Zayybabii
4,5(21 marks)
The answer is B, 1,365.
The combination formula nCr=n!(n−r)!(r!)
n is the number of elements (total).
r is the number of elements picked from the set.
In this case, n = 15 and r = 4
15!(11!)(4!)
=1365
So, there are 1365 ways of listening to the CD's.
Hope I helped!
kholman
4,9(19 marks)
-m^4n^4
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108
Step-by-step explanation:
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