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15 April, 11:52

Don, Eric, and Finn line up in random order for the cafeteria line. What is the probability that they will line up from front to back in alphabetical order?

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  1. 15 April, 13:19
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    1/6

    Step-by-step explanation:

    The number of ways they can line up is 3*2*1 = 6. Only one of these is alphabetical order. The probability that they will line up randomly in alphabetical order is 1/6.

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    Any of the three can line up first; either of the remaining two can line up second, and the remaining person can line up last. Thus there are 3*2*1 possible orders.
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