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

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

What English word has three consecutive double letters?

Can you replace the question mark with the correct number in the below table sequence?

How many letters are in the alphabet?

What is the next number?

77, 49, 36, 18 ?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

What is the longest word in the dictionary?

You need to arrange three 7 and mathematical symbols to form number 1?