Answers

2015-01-06T18:38:29+05:30

Take any four digit number (whose digits are not all identical), and do the following:

1) Rearrange the string of digits to form the largest and smallest 4-digit numbers possible.
2) Take these two numbers and subtract the smaller number from the larger.
3) Use the number you obtain and repeat the above process.

If u do this you'll reach 6174 and remain the same and continues on..!!! 
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