In Mega Millions under the 5/50 + 1/36 · Jan 1999 – May 2002 rules — 348 draws, 5 from 1–50 (an earlier era).
32times drawn · chance expected 35 −0.50σ
4draws waiting · a wait this long: 73% for any number
10.9average wait between appearances · chance says 10.0
34longest completed wait · 62% chance of one at least that long
9 is drawn as often as chance explains
Drawn 32 times in 348 draws against 34.8 expected, −0.50σ. Each draw is independent: after 4 draws away it is exactly as likely tonight as a number drawn yesterday.
9
Number 9, draw by draw
Drawn 32 times in 348 draws · average wait 10.9 draws · longest completed wait 34 · waiting 4 draws now
a completed wait — darker is longer the wait still running — a lower bound, not a finished gap
Where it lands in a sorted draw
Sort a draw and 9 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.
Never drawn alongside 5 of the other 49 numbers; chance expects about 4 such strangers by now. Every pair →
How many people play it
Under the crowd model, 9 is picked about 1.48× as often as an indifferent choice — 2nd most popular of 50. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.
Nothing here predicts the next draw. A number’s history is a record of a fair machine’s past, and the machine keeps none of it: 9 is drawn with probability 5/50 tonight whatever it did last week.