IntermediateAnalysis~10 min
Rank by Market Size
Rank 5 startup ideas by addressable market size — with a TAM estimate and one-sentence rationale for each ranking.
Skills Tested
Market sizingComparative analysisStructured ranking
Challenge Prompt
This is the example prompt structure. Write your own variation below.
Rank these 5 startup ideas by total addressable market (TAM) size, highest to lowest. For each, provide: (1) TAM estimate in £ billions (global), (2) one-sentence rationale, (3) one major risk. Ideas: (A) AI tutoring for K-12, (B) drone-delivered medication in rural Africa, (C) carbon credit marketplace for SMBs, (D) AR navigation for visually impaired people, (E) B2B water quality monitoring for factories. Output as a ranked table.
Your Prompt
Write your own version. Every word matters — be specific.
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Reward
+100 GeraCoins
Earn GeraCoins for completing this challenge. Redeem across all Gera products.
Hints (3)
- 1TAM estimates will vary — judge on the quality of reasoning, not the exact number.
- 2"One major risk" per idea adds credibility and prevents pure enthusiasm.
- 3Table format makes the ranking immediately scannable.
Related Topics
market sizingTAMstartup rankingcompetitive analysismarket evaluation
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