Why is a river so rich ?

What is the last thing you take off before bed?

What part of the chicken has the most feathers?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Who always enjoys poor health?

If you say my name, I will no longer exist. What am I?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

Can you place three balls such that the equation shown in the picture holds true?

What can you see in the middle of March and April that you can never see in any other month?