There are 9 boys and 15 girls in a class. 2 students are chosen at random 1 after the other without replacement. find the probability that 1) both are girls 2) they are of the opposite sex
Question asked by: ritisha
Asked on: 12 Sep 2010
Hopefully this is correct, a long time since I have done probability!
The first is: 15/24 x 14/23
The second is: 9/24 x 15/23 + 15/24 x 9/23
By: knowitall
Replied at: 12 Sep 2010
Rate Answer
Comment or provide your answer to this question
No comments have been added to this question "There are 9 boys and 15 girls in a class. 2 students are chosen at random 1 after the other without replacement. find the probability that 1) both are girls 2) they are of the opposite sex".
No comments have been added to this question "There are 9 boys and 15 girls in a class. 2 students are chosen at random 1 after the other without replacement. find the probability that 1) both are girls 2) they are of the opposite sex".
Ask a New Question
Find out more about Maths
Find out more about Maths
Maths Questions and Answers
probability Questions and Answers
Next question: factorise:2x+3xy-4x-6y
Become a Member! It's Free >>>
Share on Facebook: 
On Twitter:
Tweet this!
Question Keywords
replacement probability without opposite sex girls2 random
More Questions:List Degrees Of An Acute Angle
Fector Method
Coordinate Geometry
Selling Price At Specific Gross Profit
In A A SUDOKU Game Of 9X9 How Many Possibilities Of Combinations Are There ?