When two decimal digits are added in Excess-3 code and no carry is generated,…
20072007
When two decimal digits are added in Excess-3 code and no carry is generated, the correct result is obtained by:
- A.
subtract 0011 from the sum
- B.
add 0011 to the sum
- C.
subtract 0110 from the sum
- D.
add 0110 to the sum
Attempted by 144 students.
Show answer & explanation
Correct answer: A
In Excess-3 addition, each digit has an excess of 3. When two Excess-3 digits are added and no carry is generated, the binary sum has one extra 3, so 0011 must be subtracted to get the correct Excess-3 result. If a carry is generated, the correction is to add 0011.
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