A common question students face on exams is to determine whether one set, A, is a subset of another set, B. Similarly, a question might ask if set A is a strict subset of B. Questions like these often contain symbols that look similar, and one symbol that has an ambiguous meaning altogether. In this blog post, we work to demystify the symbols used for subsets and strict subsets, to help us better understand different textbooks and online resources on the topic.