Question

10% of manufactured items are found to be defective. If you randomly selected 2 items what is the probability that the first is good and the second is defective?

Answer 1

Answer:9/100

Step-by-step explanation:

Let totalitems be. 100

Therefore defective 10% are 10 items

Since first one is selected from good ones ,therefore P=90/100=9/10

Second one selected from defective,therefore p=10/100=1/10

Therefore total probability=9/10.1/10

P=9/100