What is always in front of you but can’t be seen?

What building has the most stories?

Which is faster, Heat or Cold ? Explain.

How many times can you subtract the number 5 from 25?

What is full of holes but still holds water?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I have Rs.50 and I spend it in the way as below.

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

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?