Posted by **Anonymous** on Saturday, October 13, 2012 at 11:51pm.

if n=45, calculate the number of cosets of An in Sn .

- Math -
**Reiny**, Sunday, October 14, 2012 at 12:53am
Your question makes no sense to me.

- Math -
**Anonymous**, Sunday, October 14, 2012 at 1:11am
I'm not really sure about this, but I'll give it a go. By the way, what do you mean by cosets?

n=45

Solving for the number of (costs?) of An in Sn.

A45= S45

This is the most I can simplify it down to. If you post the full question from wherever you're getting it from, I may just be able to help.

- Math -
**Annoymous**, Tuesday, October 16, 2012 at 9:45am
Answer is 2..

From Lagrange's Theorem, we know that the number of cosets in An in Sn is [Sn:An] = |Sn|/|An| = 2

Note An = n!/2 = |Sn|/2

## Answer this Question

## Related Questions

- chemistry - the mass number is used to calculate the number of-----------in one ...
- chemistry - Can one calculate the number of moles of air? If so, calculate the ...
- How do I calculate the number of atoms in a compou - I have the mass of the ...
- math - Organizer of school graduation does have three sections of chairs. 1120 ...
- Chemistry - UMM.. I keep coming up with the wrong answer? How do I calculate ...
- math help - Let u = [2,−3, 1] and v = [0, 1, 4]. Calculate the vector u &#...
- earth science - If an atom has 17 electrons and its mass number is 35, calculate...
- Chemistry - I don't really know how to go about this, Please help 1. Calculate ...
- chemistry - How do I calculate the number of atoms in a compound (not an element...
- math - calculate the number of distinct whole number factors of each number...