ITPEC IP October 2020 Question 2
ITPEC IP October 2020 — Question 2 of 100
The five positions have values 16, 8, 4, 2, and 1 from left to right, so the two leftmost black squares represent 16 + 8 = 24. The examples reveal ordinary five-bit binary place values: 2 marks the fourth position, 5 marks 4 and 1, and 10 marks 8 and 2.
Answer (c)
Why not others:
- 12 would be 8 + 4, with the second and third squares black
- 20 would be 16 + 4
- 30 would be 16 + 8 + 4 + 2
Key rule: In positional binary notation, place values double from right to left: 1, 2, 4, 8, 16.
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