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keyword

what is world's hardest riddle

Monthly search volume and cost-per-click data for "what is world's hardest riddle" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=what+is+world's+hardest+riddle&country=us" +--------------+------------------+ | volume | 10 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-14 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
hardest riddle 49,500 $0.06 15/20
world hardest riddle 6,600 $0.07 20/20
world's hardest riddle 6,600 $0.07 20/20
hardest riddle in the world 6,600 $0.04 13/20
hardest riddle on earth 6,600 $0.07 13/20
the world hardest riddle 6,600 $0.07 13/20
hardest riddle in the world answer 1,900 $0.14 18/20
world hardest riddle answer 480 $0.06 13/20
world's hardest riddle answer 480 $0.06 13/20
the world's hardest riddle 320 $0.03 15/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=what+is+world's+hardest+riddle&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt