Calculating odds vs guarantee

[hobo]

I play a game where 20 numbers are drawn out of 70. I have options to pick anywhere from 2 to 10 numbers per game. Most abbreviated wheels tell you your guarantee of winning if you play certain number of tickets using so many numbers.
For example:
in 6/49 game I pick 6
playing with 10 Numbers
I need 14 Tickets
to get 5 if 6 Guarantee
Which means I need to guess all 6 numbers to have guarantee of winning 5

May question is what would be my Guarantee if I play Pick 6 (like in the above example) with 30 numbers, and say 30 or 20 tickets but I guess more than 6, say I guess 10 (since I can guess up to 20 in my case)

Any ideas of how would this work?
I do realize that how many and which combinations come up will greatly depend on type of wheeling system used vs which numbers I guess

 

[Icewynd]

Don't know how to do the calculations, but I just hopped over to Lotto-Logix to look at some of their wheels.

http://www.lotto-logix.com/wheelhouse/ecnr30n25c.html

For 30 numbers in 25 combinations they give the following guarantee levels:

3 if 3 = 11.97%
4 if 4 = 01.37%
5 if 5 = 00.10%
3 if 4 = 39.93%
4 if 5 = 06.32%
5 if 6 = 00.61%
3 if 5 = 72.58%
4 if 6 = 17.19%
3 if 6 = 92.88%

Hope that helps!

 

[hobo]

Don't know how to do the calculations, but I just hopped over to Lotto-Logix to look at some of their wheels.

http://www.lotto-logix.com/wheelhouse/ecnr30n25c.html

For 30 numbers in 25 combinations they give the following guarantee levels:

3 if 3 = 11.97%
4 if 4 = 01.37%
5 if 5 = 00.10%
3 if 4 = 39.93%
4 if 5 = 06.32%
5 if 6 = 00.61%
3 if 5 = 72.58%
4 if 6 = 17.19%
3 if 6 = 92.88%

Hope that helps!

Thanks for input.
As I mentioned though, I play a game like Keno but I only play picking 6 numbers, and as you know Keno draws 20, so with 30 numbers playing my chance is high to guess more than 6. On average with 30 numbers I am guessing 8-12, i would be curious to see my odds , and I am looking for odds of 5 of 10, or 6 of 10. Again, this is not 6/49 game