If n(n + 1) generates a palindrome with even numbered Digits, then either n or n + 1 is always divisible by 11. In fact, any Palindrome with an even number of digits is always and without exception Divisible by 11. Why so?

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ritu

  • Jun 17th, 2007
 

if n=3 then n+1=4 n(n+1)=12 in this case palindrome is 1221 but the no or n is not divisible by 11 and niether n+1 =4 not divisible by 11

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