SOLUTION: an urn contains 4 green balls 2 black balls and 6 yellow balls. Four balls are selected at random, without being replaced. Find the probability of
a. drawing four balls that are
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Question 1170026: an urn contains 4 green balls 2 black balls and 6 yellow balls. Four balls are selected at random, without being replaced. Find the probability of
a. drawing four balls that are yellow
b. drawing a black ball a yellow ball and two green balls
Answer by greenestamps(13198) (Show Source): You can put this solution on YOUR website!
a. drawing four balls that are yellow
In choosing 4 of the 12 balls, we need to choose (1) 0 of the 4 green; (2) 0 of the 2 black; and (3) 4 of the 6 yellow:
Use a calculator if necessary....
b. drawing a black ball a yellow ball and two green balls
In choosing 4 of the 12 balls, we need to choose (1) 2 of the 4 green; (2) 1 of the 2 black; and (3) 1 of the 6 yellow:
Use a calculator if necessary....
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