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Mathematics 21 Online
OpenStudy (anonymous):

FAN AND MEDAL 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 6 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? 6 over 24 multiplied by 6 over 23 6 over 24 multiplied by 5 over 23 6 over 24 plus 5 over 23 6 over 24 plus 6 over 23

OpenStudy (fibonaccichick666):

so, how many boxes do you have?

OpenStudy (anonymous):

24

OpenStudy (fibonaccichick666):

ok good, now for the first student, what is the chance that they get a white box?

OpenStudy (anonymous):

1 over 24?

OpenStudy (anonymous):

so i mean 6 over 24

OpenStudy (fibonaccichick666):

well, do you only have 1 white box?

OpenStudy (fibonaccichick666):

ah yes, 6 over 24. (number of white boxes) over (number of boxes available)

OpenStudy (fibonaccichick666):

so now, you've given away one white box. How many boxes do you have, what is the chance of getting a white box?

OpenStudy (anonymous):

i have 23 so it 5 over 23

OpenStudy (anonymous):

so it is 6 over 24 + 5 over 23 or 6 over 24 * 5 over 23?

OpenStudy (anonymous):

@FibonacciChick666

OpenStudy (anonymous):

its B

OpenStudy (fibonaccichick666):

well, when you have two probabilities, do you add or multiply them?

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