This is more of a stats question that programming but...
I have events that produce either A or B. Each day all the events are reset and the user can redo them. Each event has a different chance of producing A (otherwise it produces B). Trying to figure out the chances of A being produced once for a given day. I know how to calculate the chance that at least 1 A is produced but not sure how to check for a particular amount.
Right now my chances are 10%, 10%, 20%, 30%, 40%, 50%, 60%, 70% which almost guarantees at least 1 A but it is producing too many As.
Anyone know the equations?