Software and formulae to calculate Tattslotto odds using the hypergeometric distribution probability

Posted by Ion Saliu on December 07, 2000.

In Reply to: Lottery system: 6 from 45 when 20 numbers Tattslotto posted by Sam Ragusa on December 07, 2000.

: Hi Ion!

: Here in Australia we have a lottery called Tattslotto which uses a fairly conventional system of 6 lotto balls being drawn from 45. There are also 2 supplementary numbers drawn. We have the usual multiple picks of 6 numbers and there's also system entries, ranging from system 7 to sytem 20. With system 20 for example, you can pick 20 lotto numbers and it covers 38,760 combinations. The minimum combination for winning is 3 numbers plus one supplemntary number which would amount to twice as much winnings as what it cost to play. My question is this.....what is the statistical probability of winning using this lotto system over a period of time, say 4 weeks. Hope you can help.

: Regards
: Sam

Using MDIEditor and Lotto or OddsCalc.exe to calculate Tattslotto odds:
- total combinations 45 taken 6 at a time = 8,145,060
- total combinations 20 taken 6 at a time = 38,760.

The probability to get ‘6 out of 6’ playing the 20-number system: 1 in 210. You can expect to win the jackpot every 210 drawings. Of course, it is not a good deal if you play each and every drawing.

There are 2 bonus numbers, in addition to the 6 winners. The 8 lotto numbers can combine into 28 combinations of 6 numbers each. The probability to get 6 numbers in the 20-number system is 28 times better, when using 2 bonus numbers. The winning chance grows now to 1 in 7.5 (once in 7 or 8 drawings). Still not a good deal, since the bonus prizes are lower. You can follow this procedure with "MDIEditor and Lotto WE" for other Tattslotto prizes.

I expressed my opinion before. Using a lotto system like the one you presented is static play. I always recommend dynamic play. You can use the WHEEL.EXE programs in my freeware.

Best of luck!

Ion Saliu
PS
• MDIEditor and Lotto WE v4.0 handles Powerball-type of games: Mega-Millions, Thunderball, Tattslotto.

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Comments:
: Tattslotto odds, software systems. Here in Australia we have a lottery called Tattslotto which uses a fairly conventional system of 6 balls being drawn from 45. There are also 2 supplementary numbers drawn. We have the usual multiple picks of 6 numbers and there's also system entries, ranging from system 7 to sytem 20. With system 20 for example, you can pick 20 numbers and it covers 38,760 combinations. The minimum combination for winning is 3 numbers plus one supplemntary number which would amount to twice as much winnings as what it cost to play. : - total tattslotto combinations 45 taken 6 at a time = 8,145,060 : - total combinations 20 taken 6 at a time = 38,760 Tattslotto combinations. You can expect to win the jackpot every 210 drawings. There are 2 bonus numbers, in addition to the 6 winners. The 8 numbers can combine into 28 combinations of 6 numbers each. The probability to get 6 numbers in the 20-number system is 28 times better, when using 2 bonus numbers. The winning chance grows now to 1 in 7.5 (once in 7 or 8 drawings). The title of this article is "Tattslotto odds, software, systems, combinations, prizes". Get your software and formulae to calculate Tattslotto odds using the hypergeometric distribution probability. Many are prizes covered, including a system of 20 lotto numbers, 6 numbers per combination.">

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