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RRB Paramedical Staff Nurse Model Paper 3
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© examsnet.com
Question : 54
Total: 100
In how many ways can 7 Indians, 5 Pakistanis and 6 Dutch be seated in a row so that all persons of the same nationality sit together?
3!
7
!
5
!
6
!
3
!
7
!
5
!
6
!
182
Validate
Solution:
Required ways
=
3
!
×
7
!
×
5
!
×
6
!
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