Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Digital Logic Number Representations and Computer Arithmetic Number Representation
Which of the following binary codes for decimal digits are self-complementing?
(a) 8421 code
(b) 2421 code
(c) excess-3 code
(d) excess-3 gray code
Choose the correct option:
1
(a) and (b)
2
(b) and (c)
3
(c) and (d)
4
(d) and (a)