LottoCalc
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Odd/Even Numbers
This will allow you to upload a file of past lotto numbers and show the the percentages of odd and even numbers.
The file format is:
1,8,10,35,38,42
12,16,28,34,39,45
etc
Click here for help and info.
You can test 505 draws from the South Australian Monday lotto by clicking

Upload Lotto file here