Check Mark in Latex

\usepackage{amssymb}% http://ctan.org/pkg/amssymb
\usepackage{pifont}% http://ctan.org/pkg/pifont




\verb|\checkmark|: \checkmark \par
\verb|\cmark|: \cmark \par
\verb|\xmark|: \xmark

http://tex.stackexchange.com/questions/42619/x-mark-to-match-checkmark