This was Gollum's final riddle from The Hobbit:
"This thing all things devours;
Bird, beasts, trees, flowers;
Gnaws iron, bites steel;
Grinds hard stones to meal;
Slay king, ruins town,
and beats a mountain down."
You're on a ski lift, going from the bottom of the mountain to the top. How many chairs from the other side will you pass by?
A few choices:
1. Half of them
2. 2/3 of them
3. All of them (but yours)
4. 3/4 of them
(The 'Google Riddles' are interview questions those who wish to get hired were asked).
The answer is C - all of them but yours.
The chairs are in a giant loop, with several stopping places on the way to the top, and you will see all the chairs probably more than once before you get up there.