Max has a bag of plain and cat’s eye marbles. there are 30 plain marbles and 7 cat’s eyes. he picks one marble and sets it aside. then he picks another.
what is the probability that he picked 2 cat’s eye marbles?

0.19

Step-by-step explanation:

To compute the probability that Max picked cat's eye marble in second chance, their are two ways that is:

Their are two type of marbles: Plain Marble (P) and Cat's eye Marble (C)

∴ Probability that Max picked cat's eye marble in second chance = P( P then C) + P(C then C)

⇒

= 0.19