20 bulb ko ek samuh Mein 4 bulb kharab hai is samuh mein se ek ya ya ya dakshya nikala Jata Hai Iski kya prayikta hai ki yah bulb kharab hoga
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2
Answer:
0.2
Step-by-step explanation:
Total number if bulb = 20
Defective bulb = 4
Probability of getting defective bulb = 4/20
= 1/5
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