Correct Answer - `437/500`
P(X is defective) `=8/100=2/25`.
P(Y is defective) `=5/100=1/20`.
P(X is not defective) `=(1-2/25)=23/25`
P(Y is not defective) `=(1-1/20)=19/20`.
Requird probability = P(assembled part is not defective)
`=P` (X is not defective and Y is not defective(
`=(23/25xx19/20)=437/500`.