Posted by Anonymous on Wednesday, February 20, 2013 at 10:15am.
A palindrome is a number that reads the same forwards as it does backwards. For example, 98789 is a 5digit palindrome, and 7337 is a 4digit palindrome. How many 3digit palindromes are there?

algebra  Reiny, Wednesday, February 20, 2013 at 10:22am
Assuming that we can't start with 0 , or else it would be a 2  digit number,
there are 9 choices for the 1st, then only 1 at the end
the middle can be any of the 10
number of such numbers
= 9 x 10 x 1 = 90
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