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VTMO 2022 — Grade 6 — vtmo Question 8

VTMO · VTMO 2022 — Grade 6 — vtmo

Question 8

How many subsets of $\{ 1 , 2 , 3 , 4 , 5 , 6 \}$ have at least two elements, all multiples of their minimum?
  1. $15$
  2. $16$
  3. $32$
  4. $35$
  5. $36$