What is so fragile that saying its name breaks it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Why Wine Glass Stem is so long?

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?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

How many bananas can you eat if your stomach is empty?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?