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A bag contains 6 gray tiles and 3 blue tiles. Jenny reached into the bag and picked a tile randomly, and then without replacing it, picked a second tile.  What is the probability that she picked a gray tile with her second pick given that she picked a blue tile with her first pick?​

 Feb 4, 2020
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If she picked a blue tile first.....there  are 6 grey ones remaining and  2  blue ones remaining.....so.....

 

P ( gray  /  blue)  =    6 / (6 + 2)  =  6 / 8   =   3 / 4

 

 

cool cool cool

 Feb 4, 2020

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