Parcels from sender S to receiver R passes. Sequentially through two post offices. Each
post-offices has a probability (1/
5) of losing an incoming parcel, undependable of all other
parcels. Given that parcel is lost, the probability that it was lost by 2nd post office is...
_____.

• ans=4/25
  
  to lost the parcel in 2nd post office ,it has to come through the 1st post office.
  so ,probability of comes the pascel from 1st post office = 1- (1/5) = 4/5.
  now, probability of lost the parcel in 2nd post office = (probability of noy lost the parcel in 1st post office) * (probability of lost the parcel in 2nd post office) = (4/5)*(1/5) = 4/25
• 10 years agoHelpfull: Yes(3) No(0)
• 0.66
  2/(2+1)
• 10 years agoHelpfull: Yes(0) No(1)