Question

At a game booth, a student gets a box of candy as the prize for winning a game. The boxes come in four colors: white, red, green, and blue. There are 10 boxes of each color. All the boxes are equally likely to be given away as prizes. Which expression shows the probability of the first winner receiving a white box and the second winner also receiving a box of the same color?

10 over 40 multiplied by 9 over 39
10 over 40 multiplied by 10 over 39
10 over 40 plus 9 over 39
10 over 40 plus 10 over 39

Answer 1

@tkhunny

Answer 2

Well, there are 40 boxes in all, and 10 white ones, so the probability of the first person getting a white box is 10/40.

Answer 3

And since he won a white box, there are now 39 boxes in all, and 9 white boxes. So the probability of the second person winning a white box is 9/39.

Answer 4

Do you know the answer now?

Answer 5

@R.I.P.BOBMARLEY

Answer 6

so is it 10/40 * 9/39

Answer 7

@AnswerMyQuestions

Answer 8

Correct, @R.I.P.BOBMARLEY !