A palindrome is a number that reads the same forward and backward, such as 343. How many odd, 6-digit numbers are palindromes?  Choose the correct choice from the following answers
A) 400
B) 450
C) 500
D) 900
E) 2500

Rationale: "first recognize you only need to consider the first three digits ( because the second three are just the first three flipped ) there are 900 possibilities for the first three digits of a 6 digit number , 100 - 999 inclusive . everything starting with a 1 , 3,5 , 7,9 will be odd , which is 5 / 9 ths of the combinations . 5 / 9 * 900 = 500 answer : c"
Answer: C