What is the coolest letter in the alphabet?

What is the longest word in the dictionary?

I know a nine-letter word having only one vowel.
Do you ?

Why do Chinese men eat more rice than Japanese men do ?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

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

Can you solve the below geography rebus by decoding the below rebus ?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?