Different lightbulbs from a box
If you test 2 different lightbulbs from a box of 100 bulbs that contains 1 defective bulb what is the probabilty that both light bulbs that you test are defective?
(A) 0
(B) 0.0001
(c) 1/9,900
(d) 0.01
(e) 1/99
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Three seconds after a polisher is started from rest, small tufts of fleece from along the circumference of the 225-mm-diameter polishing pad are observed to fly free of the pad.
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