I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

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

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

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

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Which alphabet letter is a question?