If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What will you call your mother's brother's brother-in-law?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Which digit occurred maximum times between the number 1 and 1000?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

I shave every day, but my beard stays the same. What am I?

When 99 is considered higher than 100?

What is so fragile that saying its name breaks it?