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A palindrome number is one that reads the same both forwards and backwards- for instance. 797 or 44. How many palindromic numbers are there between:

a) 10 and 400
b) 10 and 1000

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  • Maths - ,

    what is a?

  • Maths - ,

    Sorry,

    a) 10 and 400
    b) 10 and 1000

  • Maths - ,

    im not sure im typing as i find them.
    A=total of counting the numbers 11,22,33,44,55,66,77,88,99,101,202,303

    B) = total counting the numbers
    11,22,33,44,55,66,77,88,99,101,202,303,404,505,606,707,808,909

  • Maths - ,

    Mark is right, but for numbers of the form x0x, you can of course use any digit, not just zero, so

    101

    also implies

    111, 121, 131,....

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