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IMAS 2025–2026 — Middle Primary — First Round Question 13

IMAS · IMAS 2025–2026 — Middle Primary — First Round

Question 13

Start with the number 2025 and perform the following operation: every time a 0 appears in the number, replace it with 2025. For example, after the first operation, the number becomes 2202525. If this operation is repeated 2025 times, what is the positive difference between the number of 2s and the number of 5s in the final number?
  1. 0
  2. 1
  3. 1013
  4. 2025
  5. 2026