Correct Answer : Option (A) : 100010110111
Explanation : If you want to calculate the excess-3 code of any number, you need to add "3" to each digit of the same number. In the above problem, the addition of "3" to each digit gives you a new digit "8," "11," and "7." Hence, according to 8421 rules, the corresponding four-bit binary equivalents are 100010110111
