Posted by **PD** on Tuesday, November 24, 2009 at 1:02pm.

Consider the experiment of drawing two cards without replacement from an ordinary deck of 52 playing cards.

#1. What are the odds in favor of drawing a spade and a heart?

Coin question...

What are the odds in favor of getting at least one head in three successive flips of a coin?

- math -
**PsyDAG**, Wednesday, November 25, 2009 at 11:40am
The odds of drawing a spade are 13/52, then drawing the heart would be 13/51. To find the probability of getting both, multiply the individual probabilities.

Below are the possible outcomes of the tosses.

HHH

HHT

HTH

THH

HTT

THT

TTH

TTT

"At least one head" can be rephrased as 1, 2, or 3 heads. How many of the 8 possibilities fit?

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