🔗 EuroMillions Pairs — Co-occurrences

In EuroMillions, each draw selects 5 numbers from 50 and 2 stars from 12. This produces 10 ball pairs (C(5,2)) and 1 star pair per draw. Across the full history, some combinations appear more often than others: these are co-occurrences.

LotoIA analyses all 1,225 possible ball pairs (C(50,2)) and 66 possible star pairs (C(12,2)) across the entire EuroMillions draw history. The hot ranking shows the 10 most frequent pairs, the cold ranking the 10 least frequent. The interactive search lets you select 2 numbers or 2 stars to instantly see their co-occurrence.

Important reminder: Past co-occurrences do not predict future draws. Every combination has exactly the same mathematical probability. These data are a statistical exploration tool, not a prediction tool.

How does it work?

Pair analysis relies on a combinatorial calculation: for each draw of 5 numbers from 50, the 10 possible pairs are extracted (C(5,2)), and for the 2 stars from 12, the single pair. We count how many times each pair appears across the full history. Pairs are ranked by frequency, from most frequent (hot) to least frequent (cold). The interactive search lets you check any combination.