Posted by **Jane** on Monday, February 27, 2012 at 1:58pm.

Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?

- Math -
**MathMate**, Monday, February 27, 2012 at 7:11pm
The probability of a favourable first draw is 6 cards out of 13.

The probability of a favourable second draw, given the first one has succeded, is 5 cards out of 12.

The probability of both happening will therefore be the product of the two.

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