According to the credit card numbering scheme, 5038120045630085 is a valid credit card number. suppose someone input the number as 5018320045630085, would the error be detected?
a) yes, according to this error-detection system, the result of the scheme of the incorrect number would not be divisible by 10.
b) no, the error is that the third and fifth numbers were switched and since both numbers are in odd-numbered positions, the total would still be divisible by 10.
c) yes, this error-detection system will detect all transposition errors.
(ii)
find the check digit * that should be appended to the upc code 0-21243-20381-*.
a) 0
b) 2
c) 4
(iii)
which of the following statement is not true?
a) a bar code is a series of dark bars and light spaces that represent characters.
b) any system for representing data with only two symbols is a binary code.
c) a zip + 4 code can be represented by 45 bars with five bars for each digit.
explain the reason or show solution for answer in detail.