एक निर्माता के पास \( A, B \) तथा \( C \) मशीन ऑपरेटर हैं। प्रथम ऑपरेटर \( A \), \( 1 \% \) खराब...

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एक निर्माता के पास \( A, B \) तथा \( C \) मशीन ऑपरेटर हैं। प्रथम ऑपरेटर \( A \), \( 1 \% \) खराब सामग्री उत्पादित करता है तथा ऑपरेटर \( B \) व \( C \) क्रमशः \( 5 \% \) व \( 7 \% \) खराब सामग्री उत्पादित करते हैं। कार्य \( A \) पर कुल समय का \( 50 \% \) लगाता है, \( B \) कुल समय का \( 30 \% \) तथा \( C \) कुल समय का \( 20 \% \) लगाता है। यदि एक खराब सामग्री उत्पादित है तो इसे \( A \) द्वारा उत्पादित किये जाने की प्रायिकता ज्ञात कीजिए।
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