Skip to content / Đến nội dung
ThichHocToan.com

VTMO 2026 - Grade 9 - Semifinal - SET 05 - Self-study Question 7

VTMO · VTMO 2026 - Grade 9 - Semifinal - SET 05 - Self-study

Question 7

A three-digit integer becomes a perfect square both when its first digit is removed and when its last digit is removed. Find the sum of all such integers.
  1. 1013
  2. 1177
  3. 1465
  4. 1993
  5. 2016