'Palindromic' Speed
Number Theory
Level
2
An hour ago, I notched up 78987 kilometers on my odometer. The number is palindromic, reading the same backwards as forwards.
How fast was I driving during the last hour if the current number on my odometer is also palindromic?
The answer is 110.
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1 solution
The next palindrome is 79097. Thus, 79097 - 78987 = 110