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The number 121 is a palindrome, because it reads the same backwards as forward. How many integer palindromes are between 100 and 500?

 Jul 13, 2020
 #1
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The integer is between 100 and 500, and the hundreds and ones digit have to be the same. The hundreds digit and the ones digit have the numbers 1-4 to choose from.

 

The tens digit can be any number from 0-9, which means it has 10 numbers to choose from. 

 

4*10 = 40 integer palindromes.

 Jul 13, 2020
 #2
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https://web2.0calc.com/questions/math-help_138

 Jul 13, 2020

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