<p>Not actually sure that it's possible, because COL is at least 11 credits (plus you have to attain intermediate status in your language during your frosh year, which is 0-2 more credits, depending on your proficiency) and MECO looks like 14 or 15. That's 26-28 credits, none of which will overlap. Factor in that with COL you'll be abroad second semester sophomore year, and basically, you'd never be able to take anything other than COL or Math/Econ classes. Except, of course, classes to fulfill GenEd expectations, because MECO appears to require them. </p>
<p>At any rate, it's a horrible idea, because you'd never get to do anything fun. You can still TAKE math and econ classes while being a COL major, and get to take the Javanese Gamelan class or West African Dance or Drawing I or Intro to Environmental Studies or International Politics or something else interesting. You don't come to a liberal arts school to specialize that intensely that soon.</p>