SOLUTION: Let A and B be events in a sample space S. If P(A)= 2/9, P(B)= 7/36, and P (A and B)=0, what can you say about P (A or B)?

Question 1152285: Let A and B be events in a sample space S. If P(A)= 2/9, P(B)= 7/36, and P (A and B)=0, what can you say about P (A or B)?
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52756) (Show Source): You can put this solution on YOUR website!
.

P(A or B) = P(A) + P(B) - P(A and B). Is is standard general formula of the Probability theory.

Answered, explained and completed.

---------------

Thanks to tutor @greenestamps for noticing my typo . . .

I just fixed it, and now you see the corrected version.

Answer by greenestamps(13195) (Show Source): You can put this solution on YOUR website!

for tutor @ikleyn --

typo in your formula -- "=" where you wanted "-"

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