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 February 24th, 2018, 12:51 AM #1 Newbie   Joined: Feb 2018 From: Viet Nam Posts: 2 Thanks: 0 Probability In class 12A, 9 students (5 boys and 4 girls) are admitted to a school. School students are randomly divided into 4 classes (each class has more than 9 students). Calculate the probability that in the 4 classes there is one class with 3 male, 2 female class 12A
 February 24th, 2018, 12:56 AM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,202 Thanks: 1156 I can't understand this as written.
February 24th, 2018, 04:56 AM   #3
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Quote:
 Originally Posted by NhiBosin In class 12A, 9 students (5 boys and 4 girls) are admitted to a school. School students are randomly divided into 4 classes (each class has more than 9 students). Calculate the probability that in the 4 classes there is one class with 3 male, 2 female class 12A
You just said "each class has more than 9 students". There cannot be a class with only 5 students.

 February 24th, 2018, 05:28 AM #4 Math Team   Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,608 Thanks: 954 Unless meaning is: what is probability that 3 boys and 2 girls from the 9 admitted students are in same class?
February 24th, 2018, 10:50 AM   #5
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Quote:
 Originally Posted by Denis Unless meaning is: what is probability that 3 boys and 2 girls from the 9 admitted students are in same class?
I'm not going to guess at it.

OP can post the question more clearly if they want it answered.

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