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Yes, and it's 9 times the sum of the digits. Think of the first number as 10x + y, then its reverse is 10y - x. Subtracting gives 9x - 9y ie 9 (x - y), a multiple of 9. For example, taking 7 and 1 as the numbers, then 71 - 17 = 9 (7 - 1) ie 9 x 6 = 54 QED
The answer is 39. 3+9=12, 3x9=27. 12+27=39.
10 + 23 = 33 Lowest possible real number 97 + 86 = 183 Highest possible real number 02 + 13 = 15 Lowest possible number 97 + 86 = 183 Highest possible number
well, i think if you use this you can find out. A = 1-9 ,B = 0-9 , C = 0-9 , D = 0-9 , E = 0-9 for 2digit numbers = A A for 3 digit numbers = A B A for 4 digit numbers = A B B A and so on till you get to for 8 digit numbers = A B C D D C B A for 9 digit numbers = A B C D E D C B A and last for 10 digit number = A B C D E E D C B A this should work...