<PRE><B>Question 760475</B>
probability of drawing a green ticket on the first draw is 100/110.
probability of drawing a green ticket on second draw assuming you drew a green ticket on the first draw is 99/109.
probability of drawing a green ticket on third draw assuming you drew a green ticket on the first and second draw is 98/108.


the combined probability of getting a green ticket on all 3 draws is equal to  100/110 * 99/109 * 98/108.


pobability of drawing at least 1 green ticket on all 3 draws is equal to 1 minus the probability of drawing 0 green tickets on all 3 draws.


the probability of getting 0 green ticket on all 3 draws is the same as the probability of getting a red ticket on all 3 draws.


p(red) on dirst draw is 10/110.
p(red) on second draw assuming you got a red ticket on first draw is 9/109.
p(red) on third draw is assuming you got a red ticket on first and second draw is 8/108.


combined probability of getting a red ticket on all 3 draws is equal to 10/110 * 9/109 * 8/108.


combined probability of getting 0 green ticket on all 3 draws is the same probability as the probability of getting a red ticket on all 3 draws.


probability of getting at least 1 green ticket on all 3 draws is equal to 1 minus the probability of getting 0 green tickets on all 3 draws which is equal to 1 minus (10/110 * 9/109 * 8/108).


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