The perfect mix. If you go deeper into different strategies and methods you will most certainly bump into the following fact: the equal pick of odd and even numbers is the winning combination. You can find these statistics everywhere. And exactly those statistics lead us to the conclusion that you have to choose 3 odd and 3 even numbers…Or 2 vs 3 (for lotteries where you have to choose 5 numbers)

Unfortunately, according to a study by US researchers from Stanford University and Bucknell, as humans we're simply unable to do this. It turns out that even when we try to select numbers at random what we actually do is pick the numbers subconsciously. According to the experts our brain "tells" us numbers, numbers that have already reminded us of something, such as an important date, and so, without knowing it, we pick numbers that have a specific significance to us.
Learn the Delta System. The Delta Lotto method is way to choose lottery numbers based on a statistical study of numbers that are next to each other. This information has been related back to winning lottery numbers, which has formed the basis for this method. In other words, the delta method is based on research, but keep in mind there’s no guarantee you’re going to win if you choose your numbers this way.[4]