Let me show how the number 1089 gets formed by operating on a 3 digit number
Choose any 3 digit number say 731.Reverse the digits and subtract the new number from the one chosen earlier.We get 731-137=594
Now reverse the digits again and add...We will find the result as 1089.
594+495=1089.
You will get this number 1089 in all cases whatever the number chosen earlier-
Exceptions-For subtraction,the smaller number should be subtracted from the larger number.
The numbers should be so chosen ,so that the subtraction produces a 3 digit number.
Readers could try and see how the system works with 4 digit numbers.
Choose any 3 digit number say 731.Reverse the digits and subtract the new number from the one chosen earlier.We get 731-137=594
Now reverse the digits again and add...We will find the result as 1089.
594+495=1089.
You will get this number 1089 in all cases whatever the number chosen earlier-
Exceptions-For subtraction,the smaller number should be subtracted from the larger number.
The numbers should be so chosen ,so that the subtraction produces a 3 digit number.
Readers could try and see how the system works with 4 digit numbers.
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