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Thread: Is P(A n B) the same as P(B n A)?

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    Is P(A n B) the same as P(B n A)?



    As the topic says.
    If we have two events A and B respectively, is it possible that P(A n B) != P(B n A)?

    This isn't a homework question but its something i need to clarify for another question im working on.
    If i used a venn diagram and drew out A, B and looked at their intersection, shouldn't B n A be the same thing as A n B? After all an intersection is where both events share the same possibilities, so whatever possibility that A has, B has as well and vice versa.

  2. #2
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    Re: Is P(A n B) the same as P(B n A)?


    Yes, it's the same.

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