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synkk
Jan28-12, 12:45 PM
http://i40.tinypic.com/muh36e.png

As the question says the probability that both of them were longer than 24.5 minutes i'd of thought it would be in the 24-29 row, so that means 8/55 * 7/54, but the answer is 11/55 * 10/54, where did they get 11 from?

LCKurtz
Jan28-12, 12:53 PM
How many ways are to choose 2 from the over 24.5 minute group? How many ways are there to choose 2 overall?

synkk
Jan28-12, 12:55 PM
How many ways are to choose 2 from the over 24.5 minute group? How many ways are there to choose 2 overall?

oh god im stupid, thank you.