Posted by **Mark** on Saturday, February 28, 2009 at 7:19pm.

I need help. Here's the queston.

Julia has 3 red marbles, 4 blues,3 yellow and 6 black in a bag. She takes one out at random.

The probability its black ___

The probability its yellow ___

The probability it isnt red ___

- Math: Probability -
**shortee**, Saturday, February 28, 2009 at 7:21pm
Okay so there are 16 colors in all.

so the variable that it's black is 0/16 because there are no black.

the variable its yellow is 3/16.

the variable it isnt red is 13/16

- Math: Probability -
**PsyDAG**, Sunday, March 1, 2009 at 11:21am
**Shortee** missed the fact that there are 6 black marbles in the bag, so the probability of black is 6/16 or 3/8. However, the rest of his information is correct.

All he is doing is taking the number of drawings that fit the description and dividing by the total number of possibilities.

I hope this helps a little more. Thanks for asking.

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