a. Lost in the castle
b. Triangular totals
c. Shaking hands
d. Cutting cubes
e. Treasure hunt
f. Frog in the well
g. Days
Answers to some questions above:
g. Frog in the well. Question: How long does the frog take to get out of the well? Answer: 37 days.
h. Days problem. Question: What day follows the day before yesterday if two days from now will be Sunday? Answer: Thursday.