A bag of marbles contains 8 red marbles and 5 green marbles. Three marbles are drawn at random at the same time. Find the probability that all three are red.
Stacey Warren - Expert brainly.com
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I'd rather stay away from the complicated stuff if you can do it the easy way i choose that.
Basically it boils down to :
How many different ways can we pick 3 red marbles from a set of 8 red marbles.
Then we divide that by the number of different ways we can choose 3 marbles from a bag of 13 marbles.
mhm.. I did that in like 4th grade so i really dont remember it lol
I'm not sure it's the same as what you're remembering.. But in any case there are 56 different ways you can pick 3 red marbles from a set of 8 red marbles.
And there are 286 ways you can pick any 3 marbles from a bag of 13 marbles.
so 56/286 = .1958 or 19.6%
Is the probability you will grab exactly 3 red marbles.
I get it now, thank you.
This function is often built into calculators as the C function
Are you really smart brain wise or calculator wise or just incredibly smart period?
hrm.. tough one to answer. Probably I have just taken a lot of math classes. ;)