How can one talk without saying a single word?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Why did the Girl throw the butter out of the window?

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

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can you find out which options fits best with the missing column?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?