It's a good movie but I got a few questions:

1)Noodles did think Max died at the bank-robbery. But the burned body wasn't Max. But how come Noodles didn't know Max wasn't at the robbery. His other friends must have known that Max send someone else (the burned body) to do the robbery.
2)Also Max (and maybe the others) know that they were going to die at the robbery, why does he/they do it?
3) Why doesn't want Max that Noodles would come along to the robbery?