What work can one never finish?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

What 5-letter word typed in all capital letters can be read the same upside down?

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?

If you say my name, I will no longer exist. What am I?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Which wheel of car does not rotate when you turn your car right?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

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