SOLUTION: A box contains 6 ​letters, shown as TRACED. What is the probability of the outcome RACED in that order if 5 letters are drawn one by one​ (a) with​ replacement? (b) withoutâ€

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Question 1138442: A box contains 6 ​letters, shown as TRACED. What is the probability of the outcome RACED in that order if 5 letters are drawn one by one​ (a) with​ replacement? (b) without​ replacement?
Answer by ikleyn(52776)   (Show Source): You can put this solution on YOUR website!
.
(a)   =  = ,


     since at each of the 5 drawings the probability to get the needed letter is .



(b)  ,  or simply  ,


     since there is only one way to get the right configuration of 5 different symbols from 6 given different symbols.

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