two bulbs b1 and b2 contain 100 and 200 bulbs respectively.b1 and b2 have 15 and 5 defective bulbs
(i)suppose a box is selected at random and one bulb is picked out.what is the probability that it is defective?
Answers
Answered by
2
Probability is total no of defective bulbs/ total no of bulbs
=15+5/100+200
=20/300
=2/30
nikitasharma59:
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Dear pravin3013 and reportbot, I have given all the steps and there is no mistake in the answer.
Thank you for poinypting out my mistake
Answered by
0
Answer:
7/80
Step-by-step explanation:
Ei is event selecting box i
PE1)=P(E2)=1/2
A is event of selecting a defective bulb
P(A/E1)=15/100 and P(A/E2)=5/200
Required probability is P(A)=7/80
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