A museum worker randomly displays 6 historical writings in a row. What is the probability that she lines them up from the oldest to the most recent from left to right?

1 Answer
Evan
Nov 30, 2017

The probability is 1 in 720 or 1/720.

Explanation:

There is only one combination in which she lines them all correctly in chronological order.

Hence, we have to find the number of possible outcomes,

"Number of possible outcomes"=""_6P_6 =(6!)/((6-6)!)=720

"Probability"="number of favourable outcomes"/"number of possible outcomes"=1/720

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