Indicate which of the following three binary additions are correct? 1.1011 + 1010 = 10101 II. 1010 + 1101 = 10111 ?
Correct answer: B. I and II
- A. III. 1010 + 1101 = 11111
- B. I and II
- C. II and III
- D. III only
- E. II and III
Explanation
1011 + 1010 = 10101 and 1010 + 1101 = 10111, so statements I and II are correct. The third expression gives 10111, not 11111, because 10 + 13 = 23 in decimal.
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