Question

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?

Answer 1

This is a question of permutations.

n = the number of objects and in this case we have 5 team members.

They are picked 1 at a time :

Formula :

n! / (n - r)!

5! / (5 - 1)!

5! / 4!

(5 x 4!) / 4!

= 5

We have 5 ways.

Answer 2

Step-by-step explanation:

they can seat together in 5*4*3*2*1=120 ways .in .ascending order they can sit in 1 way. so they can sit in -(120-1) ways without ascending