Calculate the probability of the event, when choosing a random permutation of {1, 2, ..., n}, $\displaystyle n \ge 4$.

a) with 1 front 2

b) with 2 front 1

c) with 1 stand just before 2

d) n front 1 and n-1 front 2

e) n front 1 and n front 2

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- Jun 8th 2011, 10:05 AMseitCalculate the probability of the event
Calculate the probability of the event, when choosing a random permutation of {1, 2, ..., n}, $\displaystyle n \ge 4$.

a) with 1 front 2

b) with 2 front 1

c) with 1 stand just before 2

d) n front 1 and n-1 front 2

e) n front 1 and n front 2 - Jun 8th 2011, 10:09 AMPlato