Fun Thing you can do with Math

1. Start with any 4-digit number containing at least two different digits (i.e. not a multiple of 1111).
2. Form a new number by arranging the digits from highest to lowest.
3. Reverse this number.
4. Subtract step 3 from step 2 to get a new number. If the result has fewer than four digits, pad it with leading zeroes. (e.g. 4321 - 1234 =3087 )
5. Go back to step 2 with this number and repeat the process. After enough repetitions, you will eventually reach the magic number: 6174.
   Example : 3087
   8730 - 0378 = 8352
   8532 -2358 = 6174

Have some Fun !!!