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Chapter 10.4B

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

Deck of 52 cards:P(heart) =

Deck of 52 cards:P(king) =

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

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

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

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

Two Dice:P( sum is 7 ) =

Two Dice:P( 12 ) =

Two Dice:P( even ) =

Two Dice:P( odd ) =

Two Dice:P( prime number ) =

Two Dice:P( multiple of 3 ) =

Two Dice:P( 7 or even ) =

Two Dice:P( 7 or odd ) =

Two Dice:P( 6 or prime ) =

Two Dice:P( 11 or prime ) =

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