Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Which city is three-fifths chick two third cat and 50% goat?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

It belongs to you, but other people use it more than you do. What is it?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

How many times do a clock's hands overlap in a day ?

How can you make number one disappear by adding something to it?

Replace the question mark with the number below given a simple math problem.

What's a single-digit number with no value?