Hi all. Does anybody know their stuff when it comes to math? More specifically calculating probability... i have a question about factorials and when they should be used.(adsbygoogle = window.adsbygoogle || []).push({});

If you have let's say 2 events,

the chance of event A is 1/2

the chance of event B is 1/3

you're just supposed to multiply to give you 1/6 for the chance that A and B will both occur

BUT if let's say the order in which those events occur doesn't matter, then from what i understand you have to divide by the factorial of 2 in this case

so 6 divided by (2!) = 3.

to me that doesn't make sense, how can the odds of two events both happening where the order isn't important be less than the product of both of them if the order was important?

or let's say you had 3 events

event A is 1/3 odds

event B is 1/2 odds

event C is 1/3 odds

that's 1/18 divided by 3! which is 3x2x1= 6

so 18 divided by 6 = 3

so now my odds are back to 1/3

where am i going wrong here?

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# Probability and Factorials Question

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