1. 17 and 7 years old
2. a. yes b. no c. yes d. yes
3. Less
4. a. 20 cubes b. 56 cubes
5. – 40 degrees
6. 5 ways (as shown)
7. 11 people
8. Seven of these and six of those
9. 86
10. 13 Red 3 yellow 3 brown 3 blue 4 pink