OCR H446 · Component 02 · Algorithms and programming

2.1.4 Thinking logically

Recognise decisions, build Boolean conditions and follow the paths they create.

What to revise

Practise thinking logically.

Start with these questions from the thinking logically topic pack. In the workspace, explain each idea from memory, compare your reasoning with the feedback, then revisit the concepts that need practice.

Use the pack alongside your OCR H446 algorithms and programming revision. Your self-reported confidence helps plan the next review; it is not an exam mark or predicted grade.

Set label = 'low'. Run IF n >= 10 THEN label = 'medium'; then a separate IF n >= 20 THEN label = 'high'. What is label for n = 24, and why?Trace
Where is a decision needed before removing an item from a queue?Apply
A discount requires a valid ticket and age below 18. Which logical connective joins the tests?Logic
How does IF / ELSE affect program flow?Flow
How do two independent IF statements differ from IF / ELSE IF?Compare
Entry is permitted from age 16. Why is age > 16 an incorrect test?Debug

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