conditional probability
Could you inform me please, how can I calculate conditioned probability of several events?

for example:

P (A | B, C, D) - ?

I know, that:

P (A | B) = P (A intersection B) / P (B)

But, unfortunately, I can't find any formula if an event A depends on several variables. Thanks in advance.
conditional probability
===

Could you inform me please, how can I calculate conditioned probability of several events?

for example:

P (A | B, C, D) - ?

I know, that:

P (A | B) = P (A intersection B) / P (B)

But, unfortunately, I can't find any formula if an event A depends on several variables. Thanks in advance.