Tuesday

October 21, 2014

October 21, 2014

Posted by **anuj** on Wednesday, March 14, 2012 at 11:22am.

- probability -
**MathMate**, Wednesday, March 14, 2012 at 11:47amIf the balls are either green or yellow, it means that we do not want any red balls to be drawn out of the 16 balls.

Assuming the balls are drawn at random AND WITHOUT REPLACEMENT, for the first ball, we have 9 choices out of 16. The second: 8 out of 15, and the third: 7 out of 14.

So P(3 G∪Y)=(9/16)(8/15)(7/14)

If the drawn balls are replaced, then the probability that none of the balls is red will be

P(3 G∪Y with replacement)=(9/16)^3

So the

**Answer this Question**

**Related Questions**

Math - A bag contains 5 balls,8 white balls, 9 green balls,7 blue balls& 6 ...

Math for the middle school and elementary teacher - 3 red balls, 4 green balls, ...

Math - Four balls are simultaneously picked at random from a jar containing 2 ...

Basic Mathematics - A bag contains 2 red balls, 3 blue balls and 5 green balls. ...

statistics - Two urns each contain yellow balls and black balls. Urn 1 contains ...

Maths - There are 3 green balls,5 red balls and 2 yellow balls in a bag.You take...

8th Grade Probability - A box contains 6 red balls, 4 white balls, and 5 green ...

math - A box contains 6 red balls, 4 white balls, and 5 green balls. If three ...

Probability again - A box contains 6 red balls, 4 blue balls, and 2 green balls...

maths-urgently needed(probability) - A bag contains 5 red, 4 blue and an unknown...