S.CP.B.8: Apply the general Multiplication Rule in a uniform probability model, P(A and B) = P(A)P(B|A) = P(B)P(A|B), and interpret the answer in terms of the model.

Apply the general Multiplication Rule in a uniform probability model, P(A and B) = P(A)P(B|A) = P(B)P(A|B), and interpret the answer in terms of the model.

Example Problems

Let

X = \{1, 3, 5\}

and

Y = \{2, 3, 4\}

.
What is

X \cup Y

?

Let

X = \{7, 14, 21\}

and

Y = \{14, 28\}

.
What is

X \cup Y

?

Let

X = \{4, 9, 16\}

and

Y = \{2, 4, 6, 9\}

.
What is

X \cap Y

?

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