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A shelf has books with different colored covers; 5 are blue; 6 are red; 1 is orange; 3 are white
and 1 is blue and white. What is the probability of choosing a book that has either blue or white on the cover?
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"Either blue or white" means "blue or white, but not both at the same time".
Therefore, the calculation is as follows
P = = = . ANSWER
Solved.