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NI have a problem understanding limits with absolute. \lim_{x\to 0}\frac{2x - |x|}{|3x| - 2x} If I compute the limit \lim_{x\to...
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NDo you think it's easy? I think some of the others are a little more straightforward. Have you worked it out yet, either from the...
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NI didn't know about "stars and bars" mentioned by @Dr.Peterson, but my approach seems equivalent: Given a subset S_1 of r numbers...
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RRosabelot replied to the thread Symbolic form.Thanks for information
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Mmrtwhs replied to the thread Permutation and combination when letters are repeated.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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blamocur replied to the thread Permutation and combination when letters are repeated.I believe I've solved it, but I am not too proud of the solution: it considers 7 different cases for placing H's :confused: -
blamocur replied to the thread Permutation and combination when letters are repeated.My brute force script confirms the 88200 answer under this assumption.
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Dr.Peterson replied to the thread Permutation and combination when letters are repeated.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... -
Mmrtwhs replied to the thread Permutation and combination when letters are repeated.I agree with the OP about QUEUES. I get 2 \cdot (3+3+6)=24.
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MMaths Pro replied to the thread Permutation and combination when letters are repeated.By not distinct i mean I took QU1E1U2E2S. I had such arrangements QU1U2SE1E2, E1E2SU1QU2, U1QE1E2SU2, U1U2QSE1E2, U1QU2SE1E2, etc...
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Mmrtwhs replied to the thread Permutation and combination when letters are repeated.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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blamocur replied to the thread Permutation and combination when letters are repeated.I do not represent @Maths Pro, but I'll venture a guess. There are 720 permutations of 6 letters, but in case of QUEUES only 720/4 = 180...
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RHi everyone! Not long ago, I realized a tip to check if the number what you are thinking could be an answer to the equation. If you...
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CCalchubMath replied to the thread How do I calculate asphalt required for a driveway?.You’re absolutely right — the calculation is based on density multiplied by volume. First, yes, the volume must be calculated before...
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Dr.Peterson replied to the thread Permutation and combination when letters are repeated.I agree on stars and bars; for an intro to that, see https://en.wikipedia.org/wiki/Stars_and_bars_(combinatorics) I would expect to...
