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Dr.Peterson
replied to the thread
Basic speed distance time exercises: need strategies for awkward division without calculator
.
To estimate a division, it's usually a good idea to change both numbers in the same direction. Here, I would increase both 19 and 570 to...
Jan 25, 2026
Dr.Peterson
replied to the thread
Circular permutations anyone?
.
So they give you both options, without using different terms. I wonder how they expect you to know how to interpret any particular...
Jan 25, 2026
M
Maths Pro
replied to the thread
Circular permutations anyone?
.
Jan 25, 2026
M
Maths Pro
reacted to
Dr.Peterson's post
in the thread
Circular permutations anyone?
with
Like
.
As I understand it, circular permutations do not distinguish the two arrangements in #4, but do distinguish direction. So you may be...
Jan 25, 2026
M
Maths Pro
replied to the thread
Circular permutations anyone?
.
They are considered identical. In a straight line they are not identical.
Jan 25, 2026
Dr.Peterson
replied to the thread
Circular permutations anyone?
.
As I understand it, circular permutations do not distinguish the two arrangements in #4, but do distinguish direction. So you may be...
Jan 25, 2026
M
Maths Pro
reacted to
mrtwhs's post
in the thread
Circular permutations anyone?
with
Like
.
These two arrangements are usually considered the same.
Jan 25, 2026
M
Maths Pro
reacted to
mrtwhs's post
in the thread
Circular permutations anyone?
with
Like
.
I think the first issue is that for n people seated in a circle, the number of permutations is (n-1)!. This is assuming there is no...
Jan 25, 2026
M
mrtwhs
replied to the thread
Circular permutations anyone?
.
These two arrangements are usually considered the same.
Jan 25, 2026
M
mrtwhs
replied to the thread
Circular permutations anyone?
.
I think the first issue is that for n people seated in a circle, the number of permutations is (n-1)!. This is assuming there is no...
Jan 25, 2026
blamocur
replied to the thread
Circular permutations anyone?
.
I can see an ambiguity here: are rotated arrangements (e.g. ABCDE and BCDEA) considered different or identical?
Jan 25, 2026
M
Maths Pro
posted the thread
Circular permutations anyone?
in
Intermediate/Advanced Algebra
.
The question reads : Delegates from 24 countries participate in a round table discussion. Find the number of seating arrangements where...
Jan 25, 2026
T
Ted
replied to the thread
How to calculate ($14,000 / $10,000) ^ (365 / 913) – 1 w/o scientific calculator
.
This thread is almost 10 years old and needs no further discussion.
Jan 24, 2026
K
khansaheb
reacted to
savs77's post
in the thread
Number of days ate 3? You begin with 28 sweets. Each day, you consume 2 or 3 sweets. In 12 days, you finish all 28.
with
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.
Jan 23, 2026
M
Maths Pro
reacted to
Cubist's post
in the thread
Complex number into a trigonometric form
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.
@Loki123 to memorize pka's post#14 you only need to remember 2 things:- that tan is opposite/adjacent and that π is 180°. Then just do a...
Jan 23, 2026
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