Can you write down eight eights so that they add up to one thousand?

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

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

How many sides does a circle have?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?