How hard is it to have a social life if I don't go Greek at a school with a big Greek system

College Life
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http://www.collegedata.com/cs/data/college/college_pg05_tmpl.jhtml?schoolId=1772 says that 31% of women and 24% of men participate in sororities and fraternities at Mizzou. So there should be plenty of social life outside of sororities and fraternities there.