jkemail19
20.05.2020 •
Mathematics
The names of 11 boys and 9 girls from your class are put into a hat. What is the probability that the first two names chosen will both be girls?
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Ответ:
18/95
Step-by-step explanation:
There are a total of 20 names, 9 of which are girl names.
The probability that the first name is a girl name is 9/20.
Since there's one less girl name in the hat, there are now a total of 19 names, 8 of which are girl names. So the probability that the second name is a girl name is 8/19.
The total probability is (9/20) (8/19) = 18/95.
Ответ: