Chapter 12 - Data Analysis and Probability - 12-8 Probability of Compound Events - Practice and Problem-Solving Exercises - Page 768: 23

$\frac{1}{9}$

The events are independent: P(B)=$\frac{3}{9}$=$\frac{1}{3}$ -3 of the 9 tiles are B's- P(B and B)=P(B) $\times$ P(B) P(B and B)=$\frac{3}{9}$ $\times$ $\frac{3}{9}$ P(B and B)=$\frac{9}{81}$ P(B and B)=$\frac{1}{9}$