Question

There are 10 black pearls and 5 white pearls in the box A. There are 8 black pearls and 7 white pearls in box B. 

a. Which box has more probability of be ing the pearls black, when a pearl from each of the boxes is taken? 

b. What is the probability to get a white pearl from the box A? 

c. What is the probability to get a black pearl from box B? 

d. If all the pearls in the box B is dropped in the box A, then what is the probability to get a black pearl from it?

Answer 1

a. Box A because it has more black pearl

b. \(\frac{5}{15}=\frac{1}{3}\)

c. \(\frac{8}{15}\)

d. \(\frac{18}{30}=\frac{6}{10}=\frac{3}{5}\)