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

What Adam and Eve do not have but the rest of the people have?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

What is the riddle which can be asked all day with a different correct answer each time.

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What does this Rebus Picture means ?

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.