Can you find the missing piece of the Porsche?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

The dirtier I get, the whiter I look. Who am I?

What word is pronounced the same if you take away four of its five letters?

The answer I give is yes, but what I mean is no. What was the question?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?