Some play types offer different prizes and different odds of winning depending on which combination of numbers you choose. For example, if you pick two identical numbers and one different number – 112, for instance – that would be a 3-way bet, as there are three possible combinations of those numbers (112, 121, 211).
When you pick three different numbers, that’s a 6-way bet as there are six possible combinations of your chosen numbers (e.g. 123, 132, 213, 231, 312, 321). The odds of winning a 6-way bet are better because there are more possible combinations to hit, but the payouts are also lower than those for a 3-way bet.