Question 7
Four children met together: Adam, Bobby, Charley and Daniel. Adam shook hands with 3 of these children, Bobby shook hands with 2, and Charley shook hands with 1. How many of the children’s hands did David shake?
**Editorial note for this self-study exercise:** Interpret “David” as “Daniel”, the fourth child listed above.
**Editorial note for this self-study exercise:** Interpret “David” as “Daniel”, the fourth child listed above.