<p>My math teacher completely forgot I asked him to write me a rec, and I still got accepted. The person from the admissions office who e-mailed me said they are capable of making a decision based on only one letter. He also mentioned that he had been accepted with only one rec.</p>
<p>From my understanding, this is a more common occurrence than you’d think. I had a similar experience with my Columbia recs, so I think colleges in general tend to be pretty lenient about it.</p>
<p>If you can manage to send them another rec, that’s definitely not going to hurt you. But I don’t think they really need it.</p>