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

No matter how little or how much you use me, you change me every month. What am I?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

Which number should replace the question mark?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

How many letters are in the alphabet?

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

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?