A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Count the squares in the matchstick puzzle below?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

If an electric train is travelling south, then which way is the smoke going?

Can you count the number of triangles in the picture below?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

What makes this number unique: 8,549,176,320?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?