Hi Tommy,
I saw your explanation about the slot method for counting. You said "If order doesn't matter then multiply all slots together,then divide by the # of slots factorial wherever order doesn't matter". I didn't understand the denominator part. for e.g " If three of seven standby passengers are selected for a flight,how many different combinations of standby passengers can be selected? " The numerator will be 7*6*5, what will be the denominator.Please explain.
P.S. I can solve this using combination formula,but i want the slot method explanation.