Just a story, not a question. If it is not appropriate for this site, please delete it.

I am a 649 fan, and always buy 5 tickets a week.

why? There is a short story.

First at all, in England, if your ticket matches three numbers,

you will get 10 pounds bonus. A ticket is of price 1 pound.

One of my friends in Applied math (a numerical analysis Post Do.)

told me a strategy.

The strategy I heard is:

1. Exclude 6 numbers in last win. You still have 99% chance.

2. Select 30 numbers for your 5 tickets. Then you have 99% * 30/43

chance include all 6 numbers. (about 70% chance)

3. Divided 30 numbers in 5 groups. Plus some lucky, you will

have 40% -50% chance to hit three numbers.

This way, you may get bonus in 2-3 games, and will not loss too much money, even play every week.

Of course, it doesn't work. But, I still follow this strategy,

and keep thinking about a more reasonable strategy.