solve this question from permutation and combination
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3rd one is the right answer
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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
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