9 and 0
0 and 1
1 and 2
3 and 4 E. None of the above
Answer is Right!
Answer is Wrong!
The correct answer is B. 0 and 1.
A binary number system is a numeral system that uses two as its base. It is the simplest numeral system, and the only one that uses only two digits: 0 and 1.
The other options are incorrect because they do not use only two digits. Option A uses 9 and 0, option C uses 1 and 2, and option D uses 3 and 4.