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VTMO 2019 — Grade 9 — semifinal Question 13

VTMO · VTMO 2019 — Grade 9 — semifinal

Question 13

A ten-step staircase allows a stride of $1$ through $10$ steps. How many ways reach the top?
  1. $480$
  2. $512$
  3. $360$
  4. $1024$
  5. $720$