Question

solve this question from permutation and combination

Answer 1

3rd one is the right answer

Answer 2

Answer:

Step-by-step explanation:

the formula for n distinct things out of r things  particular are taken one at a time is r p(n-1,r-1)

on applying for first one we get

4*p(6,3)

4*120

480

answer for second one is

6 factorial

720

answer for third one is

- - - - - -

the options for filling first place is 2

and for second place we have 5

and for next ones preceeds by 1

therefore no. of ways=2*5factorial=240