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

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Can you find out the remainder when 3^300 is divided by 5?

Which tank will fill first?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

What is full of holes but still holds water?

Can you identify the famous TV character from the rebus below?

What has one letter and starts with an E?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

I can be cracked, made, told, and played. What am I?