There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

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

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

I am quite hot but become too cold if you remove the first two letters. What am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Take one out and scratch my head, I am now black but once was red. What am I?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.