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M
mrtwhs
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.
Jan 18, 2026
M
Maths 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...
Jan 18, 2026
M
mrtwhs
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...
Jan 18, 2026
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...
Jan 18, 2026
R
Rayben
posted the thread
Theorem for quadratic equations
in
Beginning Algebra
.
Hi 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...
Jan 18, 2026
C
CalchubMath
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...
Jan 18, 2026
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...
Jan 18, 2026
C
CalchubMath
reacted to
blamocur's post
in the thread
How do I calculate asphalt required for a driveway?
with
Like
.
The weight is density times volume. Can you compute the volume?
Jan 18, 2026
blamocur
replied to the thread
Permutation and combination when letters are repeated
.
This one looks like a difficult combinatorics problem to me. If you have difficulties with permutations and combinatorics in general you...
Jan 18, 2026
blamocur
replied to the thread
How do I calculate asphalt required for a driveway?
.
The weight is density times volume. Can you compute the volume?
Jan 17, 2026
C
CalchubMath
posted the thread
How do I calculate asphalt required for a driveway?
in
Arithmetic
.
I am trying to calculate how much asphalt is needed for a driveway. If the length and width are known, along with the thickness, how do...
Jan 17, 2026
L
lookagain
reacted to
Dr.Peterson's post
in the thread
Calculator giving wrong answer to compound interest problem.
with
Like
.
David hasn't been on the site in almost 7 years. Why are you bothering to answer? The question was already answered; he knows (if he...
Jan 16, 2026
M
Maths Pro
posted the thread
Permutation and combination when letters are repeated
in
Intermediate/Advanced Algebra
.
I have a doubt in permutation and combination problem. Here it goes : In how many different arrangements of letters in the word...
Jan 16, 2026
jonah2.0
reacted to
Dr.Peterson's post
in the thread
Calculator giving wrong answer to compound interest problem.
with
Like
.
David hasn't been on the site in almost 7 years. Why are you bothering to answer? The question was already answered; he knows (if he...
Jan 15, 2026
Dr.Peterson
replied to the thread
Calculator giving wrong answer to compound interest problem.
.
David hasn't been on the site in almost 7 years. Why are you bothering to answer? The question was already answered; he knows (if he...
Jan 15, 2026
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