I must be doing something wrong since I got 7/12
Two students are randomly picked from a class of 10 boys and 5 girls. What is the probability that the second student picked is a girl, given that the two has at least 1 girl?
the answer is 1/6 but i dont know how to get that..
Explanation would be appreciated thanks!
Hello, qkqh!
I solved it with my usual baby-talk approach.
And I too have no idead how they got
Two students are randomly picked from a class of 10 boys and 5 girls.
What is the probability that the second student picked is a girl,
given that the two has at least one girl?
We choose 2 students from a class of 15.
. . There are: . outcomes.
Since the two students include at least one girl,
. . the sample space is: .
The second student is a girl: .
Therefore: .
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
"They" could get with: . or
. . neither of which makes any sense.