1. Chapter 10.4B
More with
OR Probability

2. “OVERLAPPING” – the two groups are not disjoint
If A and B are OVERLAPPING events, then
P(A or B) =
P(A) + P(B) – P(A and B)
“OVERLAPPING” – the two groups are not disjoint

3. Deck of 52 cards:
P(heart) =

4. Deck of 52 cards:
P(king) =

5. Deck of 52 cards:
P(not a face card) =

6. Deck of 52 cards:
P(diamond or heart) =

7. Deck of 52 cards:
P(club or ace) =

8. Deck of 52 cards:
P(heart or face card) =

9. Two Dice:
P( sum is 7 ) =

10. Two Dice:
P( 12 ) =

11. Two Dice:
P( even ) =

12. Two Dice:
P( odd ) =

13. Two Dice:
P( prime number ) =

14. Two Dice:
P( multiple of 3 ) =

15. Two Dice:
P( 7 or even ) =

16. Two Dice:
P( 7 or odd ) =

17. Two Dice:
P( 6 or prime ) =

18. Two Dice:
P( 11 or prime ) =

19. “OVERLAPPING” – the two groups are not disjoint
If A and B are OVERLAPPING events, then
P(A or B) =
P(A) + P(B) – P(A and B)
“OVERLAPPING” – the two groups are not disjoint