Incorrect. Robot A has a $\displaystyle\frac{{3}}{{10}}\usepackage{cmbright}\Huge\$ chance of finishing in the top 3, and then Robot B has a $\displaystyle\frac{{2}}{{9}}\usepackage{cmbright}\Huge\$ chance of finishing in the top 3. What about Robot C? Calculate the individual probabilities as individual events and then multiply.