Douglas Prime | AQA 8365 Number Tutor — Product Rule of Counting

Tutor

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AQA-style variants. Paper-first.

Question type

Recommended time

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Set up cases cleanly.

Timer

00:00

Question

Work on paper first. Then self-check with the model solution.

Hints

Self-check

Session

Progress

Paper-first.

Timed questions by type. Reveal hints step-by-step, then compare to a clean model solution.

Skill types inspired by AQA 8365 Product Rule topic-test/mark scheme (codes & numbers, repetition rules, odd/even constraints, thresholds, phone digits, number plates).

Attempted

Solutions viewed

Matched

Not yet

Mobile note

Phones are okay for short prompts. For longer word problems, a tablet/laptop is recommended so you can see the full question and keep your paper alongside it.

Checklist

• Identify positions (digits/letters).
• Count choices per position (after constraints).
• Multiply (product rule).
• If “no repetition”: choices drop each step.
• If parity: handle the last digit first.

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