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September 18, 2014

September 18, 2014

Posted by **Steven** on Sunday, January 19, 2014 at 2:27pm.

- Discrete Math -
**Steve@Math**, Sunday, January 19, 2014 at 3:50pmSince there are 5 red marbles and 11 others, then the chance is

11/16 * 10/15 * 9/14 = 33/112 that the first three draws are**not**red.

So, that leaves 79/112 chance that at least one was red.

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