Skip to content / Đến nội dung
ThichHocToan.com

VTMO 2017 — Grade 3 — semifinal Question 2

VTMO · VTMO 2017 — Grade 3 — semifinal

Question 2

Ti writes all two-digit numbers containing the digit $3$. How many numbers does he write?
  1. $10$
  2. $19$
  3. $20$
  4. $30$
  5. $18$