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January 28, 2015

January 28, 2015

Posted by **MW** on Thursday, May 21, 2009 at 9:32pm.

Find the probability thatc chips A and B are selected.

- probability -
**Reiny**, Thursday, May 21, 2009 at 11:39pmnumber of ways to draw 5 chips from 7 = C(7,5)

= 21

number of ways to draw the A and B and any 3 others

= 1xC(5,3) = 10

so prob of A and B among the 5 = 10/21

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