How would you approach this problem?
121 is a palindrome. It is an integer which is the same number when it is reversed. Find an integer such that is a palindrome with 6 digits.
The answer is 836.
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A hint: We have the squares of non zero 9 digits as: 1, 4, 9, 16, 25, 36, 49, 64, 81 check the unit's digit and the tenth's digit .. narrow down.. intelligently.. rest is on u to find out... :D