4 button assumption.
Assuming one song has an average of 3500 combo and hard style has 5000 combo,while maximum style has 6500 combo.
There are 49 normal songs and an approximate 18 hard style songs and confirmed 2 maximum style songs.

Let x be the average number of combos overall
x = (3500*49) + (5000*18) + (6500*2)
x = 171500 + 90000 + 15000
x = 276500

Hmm.

The probability of missing a note every 1000 combo (thus breaking the combo) is 0.00 on a normal song,while on hard style,would be 0.13 and on maximum style,it would be 0.883.

Find the number of songs required to reach 276500 combo assuming the above is true.
Find the number of times I will break on a maximum style song.
Find the number of times I will full combo a hard style song after 100 times.

lolwut.