Can you find the missing piece of the Porsche?

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?

During which month do people sleep the least?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

The more of this there is, the less you see. What is it?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Which is the correct shadow of the bird?

I am the fastest animal but cannot climb the tree. What am I?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?