In a factory, machine \( A \) produces \( 30 \% \) of the total output, machine \( B \) produces...
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In a factory, machine \( A \) produces \( 30 \% \) of the total output, machine \( B \) produces \( 25 \% \) and the machine \( C \) produces the remaining output. If defective items produced by machines \( A, B \) and \( C \) are \( 1 \%, 1.2 \%, 2 \% \) respectively. Three machines working together produce 10000 items in a day. An item is drawn at random from a day's output and found to be defective. Find the probability that it was produced by machine \( B \) ?
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