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NThe function f(x) = \frac{2x-|x|}{|3x|-2x} is not continuous at 0. As is often the case, its limits are different for x<0 and x>0. Have...
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MMaths Pro reacted to Dr.Peterson's post in the thread Permutation and combination when letters are repeated with
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My method, adapted slightly from the QUEUES example, gives... -
MMaths Pro replied to the thread Permutation and combination when letters are repeated.Yes, I could get somewhere around the problem from your approach. Till then I was totally at sea.
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Dr.Peterson replied to the thread Permutation and combination when letters are repeated.My method, adapted slightly from the QUEUES example, gives... -
blamocur replied to the thread Permutation and combination when letters are repeated.Nice! Definitely better than my solution. -
blamocur reacted to mrtwhs's post in the thread Permutation and combination when letters are repeated with Like.
First task is to line up M,A,A,A,A,S,T. As noted earlier this can be done in \dfrac{7!}{4!} ways. Now you can insert the 2H's and 2R's...
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MMaths Pro reacted to Dr.Peterson's post in the thread Permutation and combination when letters are repeated with Like.
That's what I guessed you meant; but you hadn't mentioned changing EE to E1E2, so I wanted to be sure. Before we try to go further, we...
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MMaths Pro reacted to blamocur's post in the thread Permutation and combination when letters are repeated with Like.
My brute force script confirms the 88200 answer under this assumption.
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MMaths Pro reacted to Dr.Peterson's post in the thread Permutation and combination when letters are repeated with Like.
It looks like you are using different methods for the two problems. It would be helpful to apply the same method to both, which could...
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MMaths Pro reacted to mrtwhs's post in the thread Permutation and combination when letters are repeated with Like.
I'm getting 88200. Here is my approach. First line up M,A,A,A,A,S,T (everything except the two H's and two R's). This can be done in...
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MMaths Pro reacted to blamocur's post in the thread Permutation and combination when letters are repeated with Like.
This one looks like a difficult combinatorics problem to me. If you have difficulties with permutations and combinatorics in general you...
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MMaths Pro reacted to mrtwhs's post in the thread Permutation and combination when letters are repeated with Like.
First task is to line up M,A,A,A,A,S,T. As noted earlier this can be done in \dfrac{7!}{4!} ways. Now you can insert the 2H's and 2R's...
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MMaths Pro replied to the thread Permutation and combination when letters are repeated.Thank you all for your inputs. It was indeed a great learning experience. If there are any more approaches I would like to know them as...
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MMaths Pro reacted to mrtwhs's post in the thread Permutation and combination when letters are repeated with Like.
You are correct. I've kept all four letters apart. However the OP's original wording seems to allow HH as well as RR. So my answer...
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MMaths Pro reacted to Dr.Peterson's post in the thread Permutation and combination when letters are repeated with Like.
And making silly errors is my middle name. Hopefully I would have counted letters before actually doing the work ... That sounds like...