What does an Island and the letter T have in common?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Can you count the number of blocks in the picture below?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

I don't get anymore wetter, no matter how much rain falls on me.

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

In a certain bank, a man deposits a certain amount. According to the bank policies, the amount will be doubled up in a year but as the service charge, they will also deduct Rs. 65 by the end of every year.

If after the 6th year, the amount becomes 0, what do you think is the original amount he deposited in the bank?

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

Forwards I am heavy, backward I am not. What am I?