Binary, Hexa, and Deca numbers all have different main numbers, Their main numbers are because of their name. For example, for binary, its main number is 2 because if you break binary down it becomes bi, and bi in Greek means 2. So Binary=2, Hexa=16, and Deca=10. How to find the number pattern of each number is you do for example for Binary numbers, is you do 2 to the power of 0, 2 to the power of 2, 2 to the power of 3 and so on. You do this to every number to get the proper number sentence. This is the Binary number sentence, 2 to the power of 0 is 1 if you always do something to the power of 0 it is always 1. Next, we have 2 to the power of 1 is 2, 2 to the power of 2 is 4, and 2 to the power of 3 is 6, now the proper sentence we have made is 1, 2, 4, and 6, there are more numbers to the number sentence also. You can do this trick to the Hexa and Deca numbers, all you need to do is something to the poer of 0 then keep going on and on.