A box contains 3 red and 7 green balls. You are going to choose 3 balls, 1 at a time, without replacement. Find the probability that you will choose 3 green balls.

7/24

21/30

42/720

343/1000

Question

A box contains 3 red and 7 green balls. You are going to choose 3 balls, 1 at a time, without replacement. Find the probability that you will choose 3 green balls. 
		
7/24
		
21/30
		
42/720
		
343/1000

anonymous · Answer

may I know how did you approached this question?

anonymous · Answer

This is one of my homework questions that I am stuck on.

anonymous · Answer

ok... you can choose 3 green balls from 7 green balls as 7C3 out of total balls 10C3
P= 7C3/10C3

anonymous · Answer

My book shows combinations in a different way, as C(3,7), is that the same as you are stating?

anonymous · Answer

Thank you!

anonymous · Answer

yep.. welcome

anonymous · Answer

:)