17^7 - 17 = 17*(17^3 - 1)*(17^3 + 1) = 17*4912*4914 = 17*1228*4*546*9 = 17*1228*546*36
17^7 - 17= 17(17^3 - 1)(17^3 + 1) = 17*4912*4914 = 17*2456*273*36
Yes, cause I calculated.
I cheated, didn't I?
Try these calculations: 1 x 9 + 2 = , 12 x 9 + 3 = , 123 x 9 + 4 =, ... continue the pattern and see if you can predict the answers before calculating.
A number can be multiplied by multiple of nine i.e 9 18 27 36 45 ...
and the resulting number consist of only one digit.
Can you identify the number ?
A number can be multiplied by multiple of nine i.e 9 18 27 36 45 …
