# Which of the number is known as Kaprekar Constant named after the Indian Mathematician D R Kaprekar?

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Which of the number is known as Kaprekar Constant named after the Indian Mathematician D R Kaprekar?
posted Oct 22, 2018

6174 is known as Kaprekar's constant after the Indian mathematician D. R. Kaprekar. This number is notable for the following properties :

• Take any four-digit number, using at least two different digits. (Leading zeros are allowed.)
• Arrange the digits in descending and then in ascending order to get two four-digit numbers, adding leading zeros if necessary.
• Subtract the smaller number from the bigger number.
• Go back to step 2 and repeat.

You will get the 6174....

answer Oct 22, 2018
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