n articles are arranged in such a way that 2 particular articles never come together. the number of such arrangement is????
Answers
Answered by
10
Answer:
Total number of such arrangement will be ( n-1)!×(n-2)
Step-by-step explanation:
We have given there are n articles
Number of ways in which these n articles are arranged = n !
If two particles are arranged together then
The number of arrangement = (n-1) !
And two particular articles can be are arranged in= 2! ways
Thus, number of ways in which no particular articles come togethe
=n! -2×(n-1)!
=( n-1)!×(n-2)
Answered by
1
The answer is (n-2)(n-1)!
Attachments:
Similar questions