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1972 AMC 12 Question 4

AMC12 · 1972 AMC 12

Question 4

The number of solutions to $\{1,2\}\subseteq X\subseteq\{1,2,3,4,5\},$ where $X$ is a subset of $\{1,2,3,4,5\},$ is:
  1. $2$
  2. $4$
  3. $6$
  4. $8$
  5. None of these