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#1




Simple Probability Problem
Hi Everyone
I had a relatively simple problem that for some reason i can't get my head around. The problem states: If two cards are drawn from a deck then what is the chances that the sum of the two is 21? face card = 10 ace = 11 I got the solution but i just don't understand how they did it. can someone explain it to me. Thank you in advance for your help. 
#2




Quote:
They probably did something similar. 
#7




Alternatively there are two sequences (10,11) and (11,10). Sum the two probabilities.

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