John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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

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

I have branches, but no fruit, trunk or leaves. What am I?

Can you count the number of quadrilaterals in the picture below?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

What has lots of eyes, but can’t see?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.