Number 30

In Oz Lotto under the 7/45 + 2/45 · Jan 2009 – May 2022 rules — 697 draws, 7 from 1–45 (an earlier era).

107times drawn · chance expected 108 −0.15σ

2draws waiting · a wait this long: 84% for any number

6.5average wait between appearances · chance says 6.4

30longest completed wait · 55% chance of one at least that long

30 is drawn as often as chance explains

Drawn 107 times in 697 draws against 108.4 expected, −0.15σ. Each draw is independent: after 2 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 22 times, counted separately.

Number 30, draw by draw

Drawn 107 times in 697 draws · average wait 6.5 draws · longest completed wait 30 · waiting 2 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 30 has a favourite seat — chance gives a large number the high positions more often. That is the shape of sorting, not of the machine.

1st smallest0 · chance 0.1
2nd smallest1 · chance 1.3
3rd smallest11 · chance 8.4
4th smallest29 · chance 25.2
5th smallest38 · chance 37.8
6th smallest23 · chance 27.0
7th smallest5 · chance 7.2

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 14.6 shared draws, and the leaders are simply the ones that came out ahead this time.

37 34 14 4 5 45

It has shared a draw with every one of the other 44 numbers; chance expected about 0.0 still unmet by now. Every pair →

How many people play it

Under the crowd model, 30 is picked about 1.28× as often as an indifferent choice — 13th most popular of 45. That changes nothing about whether it comes up, and everything about how many ways a jackpot on it would be shared.

Numbers 1–31 — the birthday zone ×1.22
Round numbers (multiples of 10) ×1.05

The model and its sources → · What people believe about 30 →

Every draw it appeared in

Date	Wait	Position	The draw
2022-04-26	2	5th	4 5 17 22 30 34 45
2022-04-12	1	7th	2 14 23 25 26 27 30
2022-04-05	11	3rd	3 5 30 34 37 40

What this cannot tell you

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: 30 is drawn with probability 7/45 tonight whatever it did last week.

2019-09-17	7	5th	3 14 17 28 30 36 40
2019-07-30	1	6th	5 11 21 23 27 30 34
2019-07-23	5	6th	4 9 15 23 25 30 37
2019-06-18	1	5th	2 3 6 16 30 35 43
2019-06-11	2	4th	2 7 26 30 34 37 43
2019-05-28	2	5th	3 13 20 24 30 33 34
2019-05-14	10	5th	16 17 19 23 30 35 45
2019-03-05	2	4th	7 9 22 30 33 38 42
2019-02-19	7	5th	9 15 17 26 30 34 42
2019-01-01	5	5th	11 20 23 26 30 32 44
2018-11-27	7	6th	4 7 13 18 25 30 38
2018-10-09	4	4th	4 25 26 30 32 41 45
2018-09-11	1	5th	2 4 6 23 30 32 36
2018-09-04	13	4th	11 15 25 30 33 36 41
2018-06-05	13	4th	11 18 23 30 33 37 45
2018-03-06	7	3rd	5 18 30 34 37 38 41
2018-01-16	2	6th	4 7 9 23 26 30 37
2018-01-02	1	6th	1 8 12 26 28 30 43
2017-12-26	6	4th	2 7 9 30 37 41 45
2017-11-14	1	7th	1 3 5 15 16 25 30
2017-11-07	1	5th	4 12 13 26 30 37 45
2017-10-31	4	4th	6 21 23 30 32 42 44
2017-10-03	12	5th	7 9 14 26 30 36 43
2017-07-11	5	3rd	4 22 30 36 37 39 40
2017-06-06	16	6th	10 11 15 19 23 30 34
2017-02-14	2	4th	1 7 9 30 38 39 45
2017-01-31	8	6th	3 8 18 20 24 30 38
2016-12-06	2	3rd	15 17 30 34 35 43 45
2016-11-22	10	3rd	11 17 30 31 32 43 45
2016-09-13	7	5th	1 3 19 29 30 42 44
2016-07-26	12	5th	1 4 11 22 30 31 38
2016-05-03	9	5th	9 11 18 20 30 33 42
2016-03-01	3	5th	3 5 20 27 30 32 41
2016-02-09	9	4th	6 11 22 30 35 37 40
2015-12-08	2	5th	8 11 14 19 30 36 40
2015-11-24	3	7th	1 9 12 22 24 25 30
2015-11-03	1	3rd	5 19 30 31 32 37 40
2015-10-27	14	6th	3 5 10 11 18 30 44
2015-07-21	1	6th	3 13 20 21 26 30 33
2015-07-14	4	3rd	2 15 30 33 34 38 44
2015-06-16	2	6th	4 7 8 17 20 30 40
2015-06-02	3	5th	2 17 18 21 30 33 37
2015-05-12	2	5th	13 24 27 28 30 33 43
2015-04-28	10	3rd	2 29 30 34 35 41 45
2015-02-17	3	5th	2 4 19 25 30 31 38
2015-01-27	10	4th	1 7 9 30 31 35 40
2014-11-18	7	4th	14 28 29 30 37 38 44
2014-09-30	9	4th	10 14 27 30 34 36 40
2014-07-29	3	4th	1 10 15 30 31 38 43
2014-07-08	11	4th	7 14 28 30 39 41 42
2014-04-22	5	4th	4 5 12 30 35 36 43
2014-03-18	2	5th	2 4 19 24 30 33 38
2014-03-04	2	2nd	24 30 32 34 38 41 42
2014-02-18	13	6th	1 4 7 11 27 30 36
2013-11-19	1	4th	7 9 19 30 37 42 44
2013-11-12	13	5th	5 6 8 29 30 36 38
2013-08-13	1	4th	1 11 14 30 31 33 43
2013-08-06	10	5th	16 25 27 29 30 33 37
2013-05-28	16	5th	1 14 25 26 30 31 35
2013-02-05	2	4th	17 19 27 30 37 42 45
2013-01-22	2	6th	1 14 24 27 28 30 39
2013-01-08	1	4th	1 13 15 30 35 39 40
2013-01-01	3	5th	8 19 25 28 30 39 42
2012-12-11	27	7th	3 5 12 15 21 25 30
2012-06-05	14	3rd	1 12 30 33 34 37 44
2012-02-28	12	6th	5 8 12 17 28 30 43
2011-12-06	30	6th	2 8 12 24 29 30 33
2011-05-10	13	4th	12 15 17 30 34 35 37
2011-02-08	2	6th	14 15 18 23 26 30 41
2011-01-25	12	5th	5 16 17 28 30 34 41
2010-11-02	9	4th	11 14 23 30 32 38 43
2010-08-31	2	5th	8 13 16 23 30 33 40
2010-08-17	3	6th	2 3 15 17 23 30 44
2010-07-27	3	6th	1 8 12 19 26 30 40
2010-07-06	5	4th	9 19 29 30 34 40 45
2010-06-01	6	6th	6 14 15 16 18 30 40
2010-04-20	4	5th	1 9 11 17 30 39 44
2010-03-23	23	6th	6 9 14 23 26 30 44
2009-10-13	18	5th	10 14 26 27 30 39 44
2009-06-09	15	4th	3 19 28 30 34 40 44
2009-02-24	1	4th	2 13 28 30 34 41 45
2009-02-17	6	5th	2 4 20 23 30 41 45
2009-01-06	—	4th	5 10 27 30 32 37 45