Exercise
Which of the numbers below is not the degree of a transitive permutation representation of S4?
2
3
4
5
False,
2 is the index of A4.
False,
3 is the index of the subgroup
<(1,2,3,4), (1,3)>
of order 8.
False, 4 is the index of the subgroup S3.
Correct: 5 is not even a divisor of |S
4|.
See the
theorem on the next page