Number 20

In SuperEnalotto under the 6/90 + 1/90 · Dec 1997 – Jul 2009 rules — 1,425 draws, 6 from 1–90 (an earlier era).

89times drawn · chance expected 95 −0.64σ

31draws waiting · a wait this long: 13% for any number

15.8average wait between appearances · chance says 15.0

101longest completed wait · 8% chance of one at least that long

20 is drawn as often as chance explains

Drawn 89 times in 1,425 draws against 95.0 expected, −0.64σ. Each draw is independent: after 31 draws away it is exactly as likely tonight as a number drawn yesterday. It has also come out as the bonus ball 11 times, counted separately.

Number 20, draw by draw

Drawn 89 times in 1,425 draws · average wait 15.8 draws · longest completed wait 101 · waiting 31 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 20 has a favourite seat — chance gives a small number the low positions more often. That is the shape of sorting, not of the machine.

1st smallest29 · chance 26.0
2nd smallest27 · chance 37.4
3rd smallest23 · chance 20.1
4th smallest9 · chance 5.0
5th smallest1 · chance 0.6
6th smallest0 · chance 0.0

Every position’s lane →

The company it keeps

Seen most often with these — chance gives every partner about 5.0 shared draws, and the leaders are simply the ones that came out ahead this time.

44 16 24 55 90 3

It has shared a draw with every one of the other 89 numbers; chance expected about 0.6 still unmet by now. Every pair →

How many people play it

Under the crowd model, 20 is picked about 1.28× as often as an indifferent choice — 13th most popular of 90. 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 20 →

Every draw it appeared in

Date	Wait	Position	The draw
2009-04-18	2	1st	20 46 48 62 71 86
2009-04-14	6	3rd	2 5 20 43 64 83
2009-03-31	12	4th	2 4 16 20 29 53

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: 20 is drawn with probability 6/90 tonight whatever it did last week.

2007-05-02	27	4th	3 6 12 20 69 83
2007-02-27	11	2nd	6 20 58 59 65 88
2007-02-01	4	2nd	1 20 21 27 44 75
2007-01-23	10	3rd	8 10 20 40 80 85
2006-12-30	41	2nd	2 20 32 51 53 83
2006-09-26	36	4th	6 9 10 20 60 83
2006-07-04	13	1st	20 45 59 75 84 90
2006-06-03	10	1st	20 68 70 71 72 81
2006-05-11	20	3rd	14 19 20 26 79 82
2006-03-25	5	2nd	16 20 29 31 38 45
2006-03-14	9	2nd	15 20 32 43 45 54
2006-02-21	23	1st	20 58 65 70 77 86
2005-12-29	5	4th	3 4 17 20 23 54
2005-12-17	3	1st	20 23 42 70 80 90
2005-12-10	10	1st	20 27 28 46 64 85
2005-11-17	15	1st	20 26 30 39 40 55
2005-10-13	11	2nd	14 20 35 45 48 66
2005-09-17	3	3rd	13 14 20 22 44 88
2005-09-10	4	1st	20 48 57 65 71 90
2005-09-01	50	3rd	9 12 20 55 69 81
2005-04-16	27	3rd	5 13 20 32 38 59
2005-01-12	11	4th	2 12 16 20 24 79
2004-12-04	24	1st	20 24 38 42 44 79
2004-09-11	25	2nd	16 20 43 77 78 84
2004-06-16	34	1st	20 55 59 73 87 90
2004-02-18	19	2nd	12 20 55 79 81 82
2003-12-13	3	1st	20 48 50 58 65 78
2003-12-03	10	2nd	7 20 29 55 71 81
2003-10-29	101	3rd	2 12 20 52 54 63
2002-11-27	21	3rd	10 16 20 26 48 56
2002-09-14	9	1st	20 23 30 44 78 88
2002-08-14	5	3rd	5 7 20 25 38 59
2002-07-27	3	2nd	11 20 24 31 40 49
2002-07-17	36	2nd	17 20 44 57 71 76
2002-03-13	16	1st	20 40 64 68 76 90
2002-01-16	7	3rd	3 13 20 35 46 58
2001-12-27	4	1st	20 21 26 53 80 90
2001-12-12	15	3rd	4 14 20 61 75 78
2001-10-20	33	3rd	16 19 20 30 31 47
2001-06-27	43	2nd	16 20 27 31 32 77
2001-01-27	9	4th	2 6 18 20 49 83
2000-12-27	7	4th	1 5 14 20 39 58
2000-12-02	29	5th	6 11 17 18 20 59
2000-08-23	48	3rd	11 13 20 41 76 89
2000-03-08	14	4th	4 13 15 20 32 41
2000-01-19	6	1st	20 29 39 54 57 71
1999-12-29	1	3rd	14 15 20 42 70 88
1999-12-27	5	1st	20 21 63 71 75 79
1999-12-09	3	1st	20 32 37 44 75 88
1999-11-27	2	2nd	14 20 57 79 85 88
1999-11-20	19	1st	20 31 45 62 76 81
1999-09-15	26	2nd	17 20 27 29 72 73
1999-06-16	15	2nd	5 20 29 41 56 86
1999-04-24	1	1st	20 22 33 44 50 74
1999-04-21	11	1st	20 53 55 61 64 74
1999-03-13	1	3rd	6 18 20 34 72 90
1999-03-10	7	2nd	11 20 56 69 72 76
1999-02-13	4	2nd	12 20 23 34 67 87
1999-01-30	35	2nd	14 20 40 58 68 84
1998-09-30	7	1st	20 34 44 61 74 87
1998-09-05	17	3rd	15 16 20 23 24 87
1998-07-08	5	2nd	5 20 24 48 78 80
1998-06-20	47	1st	20 24 39 63 65 70
1998-01-07	10	1st	20 23 24 29 66 73
1997-12-03	—	1st	20 36 39 41 72 76