Product design question
If Google acquired Lego, what would you create?
- Product design
- Hard
Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.
Start a mock interview on this question · Mock interview from a job description
What this question tests
Creative product sense and strategic thinking: finding a genuine synergy between two brands rather than a surface-level mashup.
How to approach it
- Confirm the goal: is this about revenue synergy, brand halo, or a genuine new product line, since the answer differs.
- Identify what each company brings: Lego's physical building and creativity, Google's software, AI, and cloud/education reach.
- Pick a target user, such as kids aged 8 to 14 interested in coding and STEM.
- Propose a concrete product, like Lego sets with companion app-based coding challenges using Google's AI to generate custom build instructions from a photo or idea.
- Consider distribution, using Google for Education's existing school relationships to reach classrooms.
- Define success metrics, such as sets sold with companion app engagement, or classroom adoption count.
What a strong answer includes
- Grounds the idea in a real synergy (Lego's physical creativity plus Google's AI/software) instead of a generic mashup.
- Names a specific, buildable feature, like AI-generated custom instructions from a photo of a user's own creation.
- Considers monetization: hardware margin on sets plus a software subscription for premium AI features.
- Uses Google for Education as a distribution channel, which is a real, known asset.
- Stays realistic about scope for a case interview rather than proposing something implausible like a Lego-branded search engine.
Common mistakes
- Proposing something disconnected from either company's actual strengths.
- Not naming a specific target user or use case.
Likely follow-up questions
- How would you price this product?
- How would you measure success in year one?
- What would be the biggest risk in this partnership?
More product design questions
- Design a TV for a car.Google · Product design · Hard
- Design a refrigerator for the blind.Google · Product design · Hard
- How do you design a camera for the elderly?Google · Product design · Medium
- Redesign Twitter for eCommerce.Shopify · Product design · Hard
- How would you go about designing a new location sharing app for Google?Google · Product design · Medium
- How would you improve Google Home?Google · Product design · Easy
More questions from Google
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 7: AI UX and human oversight: design for a system that is wrong sometimes
- Chapter 14: Get the job: the AI PM interview loop