🪙 10 heads in a row vs 🃏 Royal flush (5-card poker)
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You're 634.5× more likely to flip heads 10 times in a row
than to get a royal flush
Periods differ: 10 heads in a row is framed as per sequence of 10 fair flips, while Royal flush (5-card poker) is per 5-card hand. The multiplier is a raw ratio of the 1-in-X figures — not a normalized lifetime risk. Compare cautiously.
10 heads in a row
1 in 1,024
per sequence of 10 fair flips
Royal flush (5-card poker)
1 in 649,740
per 5-card hand
How we calculated this
Each figure is “1 in X.” The larger X is the rarer event. Dividing that number by the more common one gives the multiplier: you're 634.5× more likely to flip heads 10 times in a row. When the periods differ, this is a raw ratio of those figures, not a lifetime-normalized risk.
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You're 634.5× more likely to flip heads 10 times in a row (1 in 1,024, per sequence of 10 fair flips) than to get a royal flush (1 in 649,740, per 5-card hand). ⚠️ Periods differ (per sequence of 10 fair flips vs per 5-card hand) — compare cautiously. — How Likely Is That? https://www.howlikelyisthat.com/compare/odds-of-10-coin-flips-in-a-row-vs-odds-of-a-royal-flush
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