The value of (207)₈ - (145)₈ is:
2016
The value of (207)₈ - (145)₈ is:
- A.
(42)₈
- B.
(602)₈
- C.
(402)₈
- D.
(62)₈
Attempted by 57 students.
Show answer & explanation
Correct answer: A
Subtract in base 8: units place 7 - 5 = 2. In the 8s place, 0 cannot subtract 4, so borrow 1 from the 2, making it 1 and making the middle digit 10₈. Then 10₈ - 4 = 4. In the next place, 1 - 1 = 0. Therefore, (207)₈ - (145)₈ = (42)₈.