### Home > CCG > Chapter 4 > Lesson 4.2.3 > Problem4-81

4-81.

Eddie told Alfred, “I’ll bet if I flip three coins I can get exactly two heads.” Alfred replied, “I’ll bet I can get exactly two heads if I flip four coins!” Eddie scoffed, “Well, so what? That’s easier.” Alfred argued, “No, it’s not. It’s harder.” Who is correct? Show all of your work and be prepared to defend your conclusion.

Make a tree for each case like the one to the right.

Both equal $\frac{3}{8}$.