Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble?

Question

anonymous · Answer

4 out of 19

veeveeniko · Answer

Wow, sorry I've had a long day. I could have easily done that.

anonymous · Answer

You would add all of the numbers together and whichever amount of that color of marbles you're searching for would be the probability of grabbing it.

veeveeniko · Answer

What about for this problem? 

Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?

anonymous · Answer

Well if you replace the green back into the bag then you would still have 19 marbles

anonymous · Answer

And only one brown marble.

anonymous · Answer

So if you have 19 marbles in total and have one brown marble, what would be the probability of picking a brown marble?

veeveeniko · Answer

I think the questions means what the probability of doing both things, picking out a green marble and then a brown after replacing it.

anonymous · Answer

So the question is asking you to find the probability of drawing a green or a brown marble after drawing a green marble and putting it back in the bag?