Question 1114806:  Consider an experiment of drawing two cards at random from a bag containing four cards marked with the letters a through d. a) Find the sample space S , of the experiment if the first card is replaced before the second is drawn. b) Find the sample space S, of the experiment if the first card is not replaced. 
 Found 2 solutions by  rothauserc, ikleyn: Answer by rothauserc(4718)      (Show Source): 
You can  put this solution on YOUR website! a) Sample space with replacement 
: 
(a,a), (a,b), (a,c), (a,d) 
(b,a), (b,b), (b,c), (b,d) 
(c,a), (c,b), (c,c), (c,d) 
(d,a), (d,b), (d,c), (d,d) 
: 
b) Sample space without replacement 
: 
(a,b), (a,c), (a,d) 
(b,a), (b,c), (b,d) 
(c,a), (c,b), (c,d) 
(d,a), (d,b), (d,c) 
:
 
 
 Answer by ikleyn(52900)      (Show Source): 
You can  put this solution on YOUR website! . 
a)  In this case, the sample space is the space of all 2-letter words of the alphabet {a,b,c,d} with the repetition of letters allowed.
b)  In this case, the sample space is the space of all 2-letter words of the alphabet {a,b,c,d} with the repetition of letters prohibited.
 
 
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