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Binary and number of states: Edexcel GCSE Computer Science questions

Every Edexcel GCSE Computer Science exam question on 2.1.1 Binary and number of states, 2022–2025, with its mark scheme and examiner’s report.

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210 questions

  1. Q1(a)(ii)

    June 2025 · Paper 1

    1 mark2.1.1 Binary and number of states
    The whole paper ↗

  2. Q2(e)(ii)

    June 2024 · Paper 1

    1 mark2.1.1 Binary and number of states
    The whole paper ↗

  3. Q5(e)(i)

    June 2023 · Paper 1

    1 mark2.1.1 Binary and number of states
    The whole paper ↗

  4. Q1(b)

    Specimen · Paper 1

    1 mark2.1.1 Binary and number of states
    The whole paper ↗
    Your answer
All 4 questions on Binary and number of states, as a list
  1. June 2025, Paper 1, Q1(a)(ii) (1 mark): State the number of unique values that can be represented with 7 bits. (1)
  2. June 2024, Paper 1, Q2(e)(ii) (1 mark): The address bus of a computer is 8‑bits wide. State the number of unique addresses that can be accessed. (1)
  3. June 2023, Paper 1, Q5(e)(i) (1 mark): State the number of unique values that can be represented with 6 bits. (1)
  4. Specimen, Paper 1, Q1(b) (1 mark): Identify the maximum number of values that can be represented with 5 bits. (1) A 5 B 16 C 25 D 32

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