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Although you’re correct that we only know how many people chose Olin over MIT and not the reverse number, my gut feeling (from those on CC that year who were admitted to both schools) is that more than 10 students turned down Olin to attend MIT.</p>
<p>To answer your question a few posts earlier, that year 20 people turned down MIT for Caltech. In comparison, 150 people turned down MIT for Harvard.</p>