Number of unique arrangements, with 13 letter word 'statistically'

  • Thread starter Thread starter mynameisfunk
  • Start date Start date
mynameisfunk
Messages
122
Reaction score
0

Homework Statement



how many different letter arrangements can be obtained from the letters of the word statistically, using all the letters?

Homework Equations





The Attempt at a Solution



\frac{13!}{3!2!2!2!2!}
 
Physics news on Phys.org


That looks correct to me.
 


ok cool thank you
 

Thread 'Family of lines that are at a distance of 5 from the origin'

I picked up this problem from the Schaum's series book titled "College Mathematics" by Ayres/Schmidt. It is a solved problem in the book. But what surprised me was that the solution to this problem was given in one line without any explanation. I could, therefore, not understand how the given one-line solution was reached. The one-line solution in the book says: The equation is ##x \cos{\omega} +y \sin{\omega} - 5 = 0##, ##\omega## being the parameter. From my side, the only thing I could...
View full post »

Thread 'Making the denominator of a certain fraction real'

Essentially I just have this problem that I'm stuck on, on a sheet about complex numbers: Show that, for ##|r|<1,## $$1+r\cos(x)+r^2\cos(2x)+r^3\cos(3x)...=\frac{1-r\cos(x)}{1-2r\cos(x)+r^2}$$ My first thought was to express it as a geometric series, where the real part of the sum of the series would be the series you see above: $$1+re^{ix}+r^2e^{2ix}+r^3e^{3ix}...$$ The sum of this series is just: $$\frac{(re^{ix})^n-1}{re^{ix} - 1}$$ I'm having some trouble trying to figure out what to...
View full post »

Similar threads

Number of ways of arranging 7 characters in 7 spaces
Replies
8
Views
2K
Combinatorics question about the four-letter sequence "GRIT"
Replies
2
Views
1K
Yr 10 Combinatorics -- Rearranging the letters of ABRACADABRA per this rule....
Replies
23
Views
2K
Arrangement of letters in a word
Replies
11
Views
2K
A bucket contains 11 letters....
Replies
3
Views
2K
How many ways can you arrange the letters from 'GREEN' with at least one 'E'?
Replies
3
Views
2K
How many strings of four letters have x in them
Replies
3
Views
3K
Permutations with possibly repeating letters
Replies
4
Views
2K
Values of Letters: Find the Value of TABLE
Replies
17
Views
2K
How Many Ways Can a Postman Deliver 4 Wrong Letters to 4 Houses?
Replies
10
Views
4K

Hot Threads

Recent Insights

Back
Top