1. (in order) C, D, B, C, B

2. 91 pencils, 9 jars

3. 37 triangles

4. Four circles

5. 20 triangles

6. a. Ask one robot what the other robot would say, if it was asked which door was safe.
….b. Go through the other door.

7. top to bottom: Chocolate, Vanilla, Blueberry, Bubblegum, Strawberry

8. Position 7

9. 120 Houses
solution:

10. a. John b. Peter