Why do Chinese men eat more rice than Japanese men do ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Replace the question mark in the picture below.

What work can one never finish?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

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

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

Which is the rope you never skip with?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?