Lucky Numbers

Computer Science Level 3

Let's say that a number k is "lucky" if it has the following characteristics:

  • It has 6 digits

  • The sum of its first three digits is equal to the sum of its last three digits

Let N be the total number of positive 6-digit "lucky" numbers. What are the last three digits of N?

Maryann Vellanikaran by Maryann Vellanikaran
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