I found an old past paper solution that says the following:
Why? And why is the number of elements in of order 5 equal to ??
hey I was having some trouble here and I was wondering if anybody could assist me.
Show that (1 2 3 4 5) is conjugate to (1 3 5 2 4) in but not in .
Clearly (4 5 3 2) will work and this is odd, so not in A5. but why can't we find an even permutation that will work for the conjugation?