J
Julio88
Guest
The main drawbacks of a key number wheel in lottery are that it can be expensive due to the large number of combinations, and it does not guarantee a win in games with multiple prize tiers. Additionally, key number wheels can be difficult to manage due to the large number of combinations and the need to choose a set of key numbers. Finally, key number wheels cover fewer numbers than full wheels, so they offer less coverage and lower chances of winning.