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probablity

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A BIN IN A HARDWARE STORE , CONTAINS 125 BOLTS AND 200 NUTS. ONE-FIFTH OF THE BOLTS AND THREE-FOURTH OF THE NUTS ARE DEFECTIVE. ONE ITEM IS PICKED RANDOMELY FROM THE BIN. WHAT IS THE PROBABLITY THAT THE ITEM IS EITHER A DEFECTIVE ITEM OR IT IS A NUT?
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1 Answer

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3 votes
225/325

Required Probability is

1-(non defective Bolt / total items in Bin)

= 1-(100/325)

=225/325
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