How many words can a pen with half refill write?

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 ?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

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

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Why is it very easy to weigh a fish?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Solve the rebus riddle in the picture below.

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?