Asked by Anon

5 students are randomly seated along the side of a table. What is the probability that they are seated in order of age?
Answered by Reiny
What is 5! ?
Answered by Anon
5!=120

1/120= 0.0083

but the options are

0.1
0.054
0.0167
Impossible to determine

Am I missing something?
Answered by Reiny
You are missing the fact that they could be ordered according to increasing or according to decreasing age.
Each would be ordered by age.

so prob = 2/120 = 1/60 = appr .0167
Answered by Anon
Ah okay. Thanks!
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