# What does it mean about events #A# and #B# if #P(A|B)=P(B|A)#?

##### 1 Answer

Oct 28, 2015

Probabilities of event

#### Explanation:

Note that

#P(A|B)= P(B|A)#

#implies (P(A nn B) )/(P(B))=(P(A nn B))/(P(A))#

#implies P(A) = P (B)#

So we can conclude probabilities of event