A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

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?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

In the picture given below, can you find out which digit will take place of the question mark?

Which is the rope you never skip with?

What seven-letter word has hundreds of letters in it?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?