Ø
Dattatreya
Ramchandra Kaprekar, also known as D. R. Kaprekar, was an Indian mathematician
and recreational mathematician.
Ø He is best known for his work on the number theory of partitioning numbers, particularly the Kaprekar constant and the Kaprekar numbers.
👉The operation:
Ø Ø Start with any four-digit number that is made up of least two different digits, including zero.
Ø Ø re-arrange the digits in ascending order for one four-digit number and in descending order for a second four-digit number (don't forget those zeros)
Ø Ø subtract the smaller number from the larger number
Ø Ø repeat until you get the same number for every iteration
Ø Ø and what number is that? It's 6174 -- always
👉Example
9541 – 1459 = 8082
8820 – 0288 = 8532
8532 – 2358 = 6174
7641 – 1467 = 6174
