standard_description: Apply the Addition Rule, P(A or B) = P(A) + P(B) – P(A and B), and interpret the answer in terms of the model.
problem_activity: Problem 1
Below is a spinner with four quadrants, each labeled 1 through 4. Each outcome is equally likely.
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Sam spins the spinner twice and doesn't land on 4. What is the probability of this occuring?
Problem 2
Dan has shuffled a deck of cards. He chooses a first card, looks at it, puts the card back into the deck, shuffles again, and finally chooses a second card. What is the probability that Dan’s two cards are of the same suit?


aligns: yes