Course materials are sent to students by a distance education institution The probability that they ...........

Quantitative Aptitude (CDS) Probability

Course materials are sent to students by a distance education institution. The probability that they will send the wrong programme’s study material is 2/5. There is a probability of 2/3 that the package is damaged in transit, and there is a probability of 1/4 that there is a short shipment. What is the probability that the complete material for the course arrives without any damage in transit?

3/5

3/20

3/4

1/20

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Explanation:

Probability (sending a correct programme)=1 – 2/5
=3/5
Probability (the packet is not damaged) =1-2/3=1/3
Probability (there is no short shipment) =1-1/4=3/4
Required probability=3/5×1/3×3/4
=3/20