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$\begingroup$

An example : 923456781-123456789=799999992

Now divide it by the difference between the terminal digits, i.e. 9-1=8

So 799999992/8=99999999

Another example : 52314780-02314785=49999995/5=99999999

But if we do : 799999992/9=88888888 and 49999995/9=5555555

So either the difference or 9 itself help in generating symmetric palindromes

Can this be generalized?

Also refer to Super palindromes and 9 hidden in every number regardless of number of digits?

  • 1
    Looks like you are the same person as http://math.stackexchange.com/users/47960/pradip-saha http://math.stackexchange.com/users/48050/pradip-saha Kindly do not create multiple accounts. I have asked the moderators to merge these accounts.2012-11-04
  • 0
    Ok, thanks @Marvis, any thoughts on this question..2012-11-04

1 Answers 1