Question

There are 4 girls and 6 boys in a music group. the teacher selects two of the students at random. Work out the probability that he selects two boys. Will medal best explanation

Answer 1

@mathmate

Answer 2

@dan815

Answer 3

@Mimi_x3

Answer 4

There are 4 girls and 6 boys so there is a total of 10 kids in the class\
4/10 are girls so .4 chance that a girl will be selected
and 6/10 are boys so .6 chance that a boy will be selected

So the probability that a boy will be selected on the first time is 6/10
But then once that boy has been selected there are only 9 kids left in the class to be chosen and only 5 boys left so 5/9 that a boy will be chosen

So the probability that a boy will be selected twice is (6/10)*(5/9)

Answer 5

this question is non replacement @Mimi_x3

Answer 6

Well I took that into consideration

Answer 7

The answer is 1/3 but i dont know how you get that answer because i dont know the method

Answer 8

Thats why once the boy was chosen then we have
4 girls in the class and 5 boys since 1 boy has been chosen
Therefore when we choose the second time around there are 5 boys out of 9 students