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VTMO 2015 — Grade 7 — semifinal Question 15

VTMO · VTMO 2015 — Grade 7 — semifinal

Question 15

How many three-digit numbers have adjacent digits differing by $3$, such as $141$ and $258$?
  1. $12$
  2. $14$
  3. $16$
  4. $18$
  5. $20$