The table below shows the number of marbles of different colors in a bag:

Color of Marbles Number of Marbles
Pink
4
Blue
8
Green
1

Bryn draws a marble from the bag randomly without looking. He then draws another marble from the bag without replacing the first one. Which expression shows the probability of drawing blue marbles in both the trials?

Question

The table below shows the number of marbles of different colors in a bag:


Color of Marbles	Number of Marbles
Pink
4
Blue
8
Green
1


Bryn draws a marble from the bag randomly without looking. He then draws another marble from the bag without replacing the first one. Which expression shows the probability of drawing blue marbles in both the trials?

anonymous · Answer

8 over 13 multiplied by 7 over 13
 8 over 13 added to 7 over 12
 8 over 13 multiplied by 7 over 12
 8 over 13 added to 7 over 13

anonymous · Answer

8 over 13 multiplied by 7 over 12

anonymous · Answer

how did you get that though? @em2000

anonymous · Answer

I agree

anonymous · Answer

So it is blue marbles out of the first 13 marbles, but then on the second trial, he took out one marble changing the denominator to 12 and the numerator to 7

anonymous · Answer

thank you! :)