Fred’s Packing Job

Fred was almost done packing for the day, with five packages left. Unfortunately, Fred dropped the labels and had no idea which label went to which package. What is the probability that Fred managed to correctly label exactly four of the five packages?

Zero. If Fred had correctly labeled four packages, the fifth label would belong to the fifth package and all packages would be correctly labeled. Therefore it is impossible to mislabel exactly four packages.

Posted in Brain Teasers


2 Comments on "Fred’s Packing Job"

Roni says
July 21, 2023 @ 21:53

You said labels meaning more than one were dropped. Don’t you mean label?

Dan says
July 22, 2023 @ 16:50

@Roni Nope, labels for the last five packages were dropped.

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