Class 7 · Computer Science · Hard level · 9 questions
Number Systems & Data Representation: Applied
Binary, and how text, images and sound all become numbers. In Class 7 Computer Science the topic covers reading binary, converting decimal to binary, images and sound and working out a file size. This quiz is the hardest level, with Class 7 exam-style questions that mix the ideas together. 9 questions (multiple choice), marked the moment you finish, with the reason for every answer.
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