Kaprekar's routine

ID: kaprekar-s-routine

Kaprekar's routine is a fascinating mathematical process named after the Indian mathematician D. R. Kaprekar. It involves taking a four-digit number, performing a series of steps, and often leads to a fixed point known as Kaprekar's constant, which is 6174. Here’s how the routine works: 1. **Choose a four-digit number**: The number must contain at least two different digits (e.g.

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