cheergirl2133
08.11.2019 •
Mathematics
Aclinical cohort consists of seven sets of boy/girl twins (i.e. each twin pair has a brother and a sister). five of the fourteen subjects are randomly selected
a) what is the probability that the selected group is niether all male nor all female?
b) what is the probability that the selected group contains no siblings?
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Ответ:
2nd one
Step-by-step explanation:
The 2nd one has two ordered pairs that have the same x value.