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A jar contains two red marbles, three green marbles, ten white marbles and no other marbles. Two marbles are randomly drawn from this jar without replacement. What is the probability that these two marbles drawn will both be red? Express your answer as a common fraction.

 

 

 

 

I'm sorry this is from aops but I really need to get this one correct because then I will master it.

 May 4, 2020
 #1
avatar+111326 
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P(both red)  =  (2/15)(1/14)  = 2/210  =  1/105

 

cool cool cool

 May 4, 2020
 #2
avatar+50 
0

I can tell this is an Alcumus problem...

 

Do the Alcumus first then do the homework...

 

Counting and Probability... Nice...

 May 4, 2020
 #3
avatar+189 
0

Yay I got 3 mastered in the topic that I'm doing

SoggyPerson  May 4, 2020

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