Question: When I am filled
I can point the way,
When I am empty
Nothing moves me,
I have two skins
One without and one within.

What am I?

Question: Walking home one day, you take a short cut along the train tracks. The tracks cross a narrow bridge over a deep gorge. At the point you are 3/8 of the way across the bridge, you hear the train whistle somewhere behind you. You charge across the bridge, and jump off the track as the train is about to run you down. As it happens, if you had gone the other way, you would have reached safety just before being run over as well.

If you can run ten miles per hour, how fast is the train moving?

Question: John was very tired after a long day of work. He went to bed at 10 p.m., wound his alarm clock and set it for noon the next day. Since John fell asleep almost immediately, how many hours of sleep did he get before the alarm woke him?

Question: What is so fragile that when you say its name you break it?

Question: Three cars had driven into a parking lot at the same time, and the three drivers left them all for the
attendant to park. Unfortunately, he isn't too good at remembering exactly which driver drove which car.
However, he is sure of these 6 facts:

a. Colin drove the BMW if and only if Mr. Cooper drove the Avenger.
b. Alan drove the Cortina if and only if Mr. Cooper drove the BMW.
c. Colin is Mr. Brown if and only if Mr. Andrews drove the BMW.
d. Brian is Mr. Andrews if and only if Colin drove the BMW.
e. Mr. Cooper drove the Avenger if and only if Alan is Mr. Brown.
f. Colin is Mr. Brown if and only if Alan drove the Cortina.

Who arrived with which car?

Question: I am a perching barrel, filled with meat,
Taking hits from leaps and dives.
Look inside, but do not eat,
The meat in there is still alive!

Question: An officer wishing to arrange his men in a solid square found by his first arrangement that he had 39 men left over. He then started increasing the number of men on a side by one, but found that 50 additional men would be needed to complete a new square. How many men did the officer have?

Question: Pronounced as one letter,
But look and you'll see,
That really I'm written with three.
I'm read from both ends,
The same either way.

What am I?

Question: If the only frying pan in the house is large enough to cook two pancakes at a time and pancakes take one minute to brown one side, how can you make three pancakes in three minutes?

Question: A young man decides to buy a collector's baseball card. He pays $60 for it. After a month, the value of the card has increased to $70 and he decides to sell it. But already a few days later he regrets his decision to sell the collector's item, and he buys it again. Unfortunately he has to pay $80 to get it back, so he loses $10. After a year of owning the baseball card, he finally decides to sell it for $100. What is his overall profit?