Exam-style question
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Which is the correct binary representation of 26₁₀?.
- A.11000₂
- B.11010₂
- C.11100₂
- D.10110₂
Model answer
What a good answer should say
- 11010₂
Explanation
Why this works
26 can be made from 16 + 8 + 2, so the binary digits for 16, 8, 4, 2 and 1 are 1, 1, 0, 1 and 0. Thus, 26₁₀ = 11010₂.
Common mistake
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