Wednesday, 16 February 2011

Its nearest twin

Shares 2 of 5 numbers (31, 41) and 0 of 1 stars with the draw of 29 January 2011 — its closest relative in 90 draws. Chance gave a match this close a 100% likelihood somewhere in that history.

From the draw just before (12 February 2011): 1 carried over. Chance says 50% of draws repeat at least one number. Stars: none repeated (17% expected).

Sum and shape

The numbers add up to 116 — the 66th percentile of all possible tickets, around a middle of 105. Side-by-side numbers: 21–22. 42% of draws have at least one such pair.

The longest wait in this draw

21 had not appeared for 7 draws. A number waits about 8 on average, and a wait this long was not a signal — the machine has no memory of it.

How many people held it

A line like this is played about 0.9× as often as an average ticket — about as popular as most. At 30 million tickets sold, a winner on these numbers would keep about 3% of the jackpot.

Illustrative model, calibrated to published studies — not live sales.