by Guest » Thu Jul 23, 2015 5:55 pm
1908 x 64 = 122112
Use the fact that a number is a multiple of 2 if the last digit is a multiple of 2 to determine the last digit of the 6 digit number.
Use the fact that a number is a multiple of 4 if the last 2 digits together form a multiple of 4 to determine the second last digit of the 6 digit number.
Use the fact that a number is a multiple of 8 if the last 3 digits together form a multiple of 8 to determine the third last digit of the 6 digit number.
etc.
Hope this helped,
R. Baber.