If P(A or B) = 0.3, P(A) = 0.7 and P(B) = 0.5, determine P(A and B).
Can any set be a proper subset of itself give an example of why or why not?
What's the equation that shows the pattern among this set of ordered pairs (2, 5), (4, 9), (5, 11), (7, 15)
There are total 15 people. 7 speaks french and 8 speaks spanish. 3 do not speak any language. Which part of total people speaks both languages.
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