2010-29.md

course	course_year	question_number	tags	title	year
Groups, Rings and Modules	IB	29	IB 2010 Groups, Rings and Modules	Paper 2, Section I, $2 \mathrm{H}$	2010

Give the definition of conjugacy classes in a group $G$. How many conjugacy classes are there in the symmetric group $S_{4}$ on four letters? Briefly justify your answer.