What is the binary sum of 0 and 1?

What is the binary sum of 0 and 1?

• A. 0
• B. 2
• C. 01
• D. 1

Answer: (D)

Binary numbers are in base 2, so each position is a power of two and can be 0 or 1. When you add 0 and 1, you get 1 and there’s no carry because the sum fits in one position. So the result is 1. The other options don’t fit: 0 would happen if both addends were 0; 2 isn’t a single binary digit (in binary, 2 is written as 10); 01 is just a padded form of 1, but the standard result is 1.

Binary numbers are in base 2, so each position is a power of two and can be 0 or 1. When you add 0 and 1, you get 1 and there’s no carry because the sum fits in one position. So the result is 1. The other options don’t fit: 0 would happen if both addends were 0; 2 isn’t a single binary digit (in binary, 2 is written as 10); 01 is just a padded form of 1, but the standard result is 1.