It means the probability of a random permutation of n numbers gets sorted after 1 pass of bubble sort is n!
According to the statement
we have to find the probability of random permutation of the N numbers.
So, according to the definition of A random permutation is a random ordering of a set of objects, that is, a permutation-valued random variable.
In this we order of select the objects randomly.
So, Let There are n−1 comparisons, so 2n−1 possible sequences of actions - swap or don't swap.
To find the permutations, start with 1,2,3,4,5 and undo a sequence.
For example, if let n=5, there are 24=16 out of 5!
which is 5! =120 that end after one round of bubble sort.
So, It means the probability of a random permutation of n numbers gets sorted after 1 pass of bubble sort is n!
Learn more about probability of a random permutation here brainly.com/question/14615273
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