GCSEGeniusComputer Science

OCR 1.2.4 · Data representation

Binary, denary and hexadecimal

OCR J277 questions. AQA · OCR · The lesson

1 of 6
Question 11 mark
  • No calculator
  • AQA 8525 and OCR J277
Spec and skills
  • Paper scope: AQA Paper 2 · OCR Paper 1
  • Topic spec AQA 3.3.1
  • Topic spec AQA 3.3.2
  • Topic spec OCR 1.2.4
  • Skill: binary-to-denary
  • Learning check
  • AQA 8525 Version 1.3, 16 June 2025 (exams from June 2027); OCR J277 Version 3.1, May 2026

What is the binary number 1001 1101 in denary?