IBM
Company
Numerical Ability
Permutation and Combination
in how many ways can 5 team members named sita(empl_id 1), gita (empolee_id 2), meeta(emp_id 3), rita(emp_id 4) and kirti(emp_id 5) be seated if they should not sit in ascending order of their employee ids?
Read Solution (Total 7)
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- they can sit in ascending order in one way.
so no of arrangements=total ways-no of ways sitting in ascending order
=> (5*4*3*2*1)-1
=>120-1
=>119 ways. - 6 years agoHelpfull: Yes(17) No(0)
- 119 ways
5!-1=119 - 6 years agoHelpfull: Yes(5) No(2)
- (5*4*3*2*1)-1
=120-1
=119 ways. - 6 years agoHelpfull: Yes(2) No(0)
- only 1 way i.e sita then gita then meeta,rita and finally kriti.
- 6 years agoHelpfull: Yes(1) No(7)
- And will be 5 way
B'COZ we can take descending order
And ascending or descending orders
So that's why I think and ans will be 5 - 6 years agoHelpfull: Yes(0) No(2)
- 115
5!=120
and 120-5=115 - 6 years agoHelpfull: Yes(0) No(4)
- 5!-1=119 ways
- 5 years agoHelpfull: Yes(0) No(0)
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