How many words can a pen with half refill write?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

When is the top of a mountain similar to a savings account?

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?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

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?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

What can go up a chimney down, but can’t go down a chimney up?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Can you name four days which start with the letter 'T'?