AP EAMCET · Maths · Probability
The probabilities of having a defective toy in three cartons are respectively. If a carton is selected at random and a toy drawn randomly from it is found to be defective, then the probability that it is drawn from carton is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Consider E1, E2 and E3 be the events of selecting defective toys in cartons A, B and C. From Bays rule, the probability that a selected carton is drawn from carton B, P=PE2·PAE2PE1·PAE1+PE2PAE2+PE3PAE3 =13×1413×13+13×14+13×25…
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