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VTMO 2020 — Grade 7 — vtmo Question 8

VTMO · VTMO 2020 — Grade 7 — vtmo

Question 8

How many ordered fractions with distinct numerator and denominator from $\{ 1 , \ldots , 32 \}$ are integers?
  1. $80$
  2. $84$
  3. $85$
  4. $86$
  5. $87$