A bag contains 5black, 7red, and 3white balls a ball is drawn from the bag at random find the probability that the ball drawn is black orwhite, not black
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total=15
black or white =5+3=8
probability =8/15
not black=10
probability =10/15 or 2/3
black or white =5+3=8
probability =8/15
not black=10
probability =10/15 or 2/3
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