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IKMC 2019 - Grades 9-10 - Self-study Question 30

IKMC · IKMC 2019 - Grades 9-10 - Self-study

Question 30

Deleting any one digit from a four-digit number always gives a three-digit divisor of the original number. How many four-digit numbers have this property?
  1. 5
  2. 9
  3. 14
  4. 19
  5. 23