THE PROBLEM:
Determine the value of X so that 7X345417803 is a validmoney order identification number. The last number “3” is the error detector number.
THE ANSWER:
Sum of the first ten digits is:
7+3+4+5+4+1+7+8+0 = 39
39, when divided by 9 give you the remainder of 3
9 x4, is 36
36 +3 equals 39
(39 = 9 x 4 + 3)
So X= 0
Determine the value of X so that 7X345417803 is a validmoney order identification number. The last number “3” is the error detector number.
THE ANSWER:
Sum of the first ten digits is:
7+3+4+5+4+1+7+8+0 = 39
39, when divided by 9 give you the remainder of 3
9 x4, is 36
36 +3 equals 39
(39 = 9 x 4 + 3)
So X= 0