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If $A \cap B = \varnothing$ $P ( B ) = 0.3$

Question 157

Multiple Choice

If $A \cap B = \varnothing$ , $P ( B ) = 0.3$ , and $P ( A \cup B ) = 0.3$ , then find $P ( A )$ .

A) 0.35
B) 0.7
C) 0.2
D) 0.3
E) 0

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