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Allen and Bethany each arrive at a party at a random time between 1:00 and 2:00. Each stays for 20 minutes, then leaves. What is the probability that Allen and Bethany see each other at the party?

 Dec 6, 2020
 #1
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See here :  https://web2.0calc.com/questions/help-please_46127

 

 

cool cool cool

 Dec 6, 2020
 #2
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I don't get it.

Guest Dec 6, 2020

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