Tawawa

I haven't read this thread since around post #9. Tomorrow, just for fun, I'll give my answers to the riddles without spoilers, and then I'll read the rest.

Sorry for the delay, there's a lot to read.

1. C

The strange numbers confused me, but after thinking about it and Googling the periodic table, it became easy.

2. D

Well, I'm not sure, maybe I missed something, but he should need 3 minutes from the landing point to the treasure chamber and 5 minutes to carry the treasure from there to the point to escape. That's 8 minutes per cycle. So, 7 attempts, and he will return to the treasure chamber on the 8th, but won't have time to take it out.

3. B

1-2. Kaya carries the canvases, and returns herself.

3-4. Raphael carries Alma, and returns himself.

5-6. Raphael carries the cat, and returns himself.

7-8. Raphael carries the monkey, and returns himself.

9-10. Kaya carries Raphael, and returns herself.

11. Kaya transports the screw for the guys.

4. D

A simple riddle about the alphabet, solved in half a minute.

5. C

It's a geometric progression, right?

50 mm - 25 mm - 12.5 mm - 6.75 mm?

6. D

I'll still believe in the laws of symmetry.

7. C

Also easy, solved in a minute.

I'll go read the rest of the thread.