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A-LevelComputer ScienceAlgorithm Design and Problem SolvingOct/Nov 2025Paper 2 Q49 Marks

A program contains a global 1D array Number consisting of 20 elements of type REAL A procedure Store () will input a sequence of up to 20 real values, one value at a time. These values will be assigned to elements of the array using four steps: Step 1: store the first value in the sequence in the first element of the array Step 2: check each subsequent value input. If this value is larger than the previous value input, then assign the value to the next array element, otherwise go to step 4 Step 3: repeat from step 2 unless the array is full Step 4: output the count of the number of values stored in the array together with a suitable message.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Computer Science Question

Topic

This structured question tests Algorithm Design and Problem Solving in A-Level Computer Science (syllabus code 9618). It is worth 9 marks.

Source

This question appeared in the Cambridge A-Level Computer Science Oct/Nov 2025 examination, Paper 2 Variant 1.

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