How can you drop a raw egg from a height onto a concrete floor without cracking it?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

What's a single-digit number with no value?

The dirtier I get, the whiter I look. Who am I?

What is common among 11, 69, and 88?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

The more of this there is, the less you see. What is it?

A charming young lady was approached by a kind looking old woman in a restaurant. The old woman said to her, 'You look exactly like my younger daughter. Sadly she passed away a couple of months back. Could you do me a favor and say 'Goodbye, mother' with a kind smile on your face when I leave?

The young lady agreed for the same and said, 'Goodbye, mother' when the old woman left. Soon after, she got the most disengaging shock of her life.

Can you guess what the shock was?