I know this might be really simple, but I get easily confused.(adsbygoogle = window.adsbygoogle || []).push({});

CASE 1.

I have a bag with eight marbles, one of them is green and the remaining seven are red.

If you have to pick a random marble without looking, there is one in eight chances (12.5%) of lifting the green one.

Is this correct?

CASE 2.

I have three identical bags (like the one in case 1).

What are the chances of picking the three green ones? 3 in 24? (25%) this is how i though it would work out, but logically I predicted that it would have been more difficult to pick the three out of all the 24 (From three different bags), so I thought I was doing something wrong.

All help will be greatly appreciated.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# REALLY Simple Probability

**Physics Forums | Science Articles, Homework Help, Discussion**