question no 10...
plz help...
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I think it's ur NCERT textbook question
pleezzz check ur textbook
pleezzz check ur textbook
asdfghjkl44:
yes but I can't solve it plz help... naa
actually i don't have enough net to post it
i am really really sorry
oh it's fine nothing to say sorry
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see I will tell the basic concept
you consider the k objects to be kept together as one object. so when u consider k objects out off n as one, you are left with n-k+1 objects.
so total no of ways to arrange n-k+1 objects is (n-k+1)!
but for each arrangement you can further arrange the small group of k members in k! ways. so total number of possibilities is
(n-k+1)!(k)!
you consider the k objects to be kept together as one object. so when u consider k objects out off n as one, you are left with n-k+1 objects.
so total no of ways to arrange n-k+1 objects is (n-k+1)!
but for each arrangement you can further arrange the small group of k members in k! ways. so total number of possibilities is
(n-k+1)!(k)!
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