# Need help with formula

in the multiplication rule video the formula is P(A|B) * P(B) = P(A INTERSECT WITH B)

and it's different from this video

1 answers ( 0 marked as helpful)

Hello Abdulrahman,

The formula P(A|B) * P(B) = P(A INTERSECT WITH B) simply rearranges the definition of conditional probability, while Bayes' rule provides a way to compute P(A|B) when you know P(B|A), P(A), and P(B).

In practical terms, Bayes' rule is powerful because it allows us to update our probabilities about an event A given new evidence about an event B.

Does this make sense, please?