pr47723
16.12.2021 •
Mathematics
15
Sally has 8 new pictures for her scrapbook. If she places four pictures on each page, what is the
probability that pictures of Sam, Jaime, LaQuita, and Alexandra will be on the same page?
А
1/1,680
B
1/70
C
1/8
D
1/2
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Ответ:
(2a-2b)/(5a+5b)=2(a-b)/5(a+b)=2/5 *1/c=2/(5c)