What has no start, end, or centre?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

What runs around the whole yard without moving?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

what's the probability of getting a king or a queen from a pack of 52 cards?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

What is the longest word in the dictionary?