Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

What four weights can be used to balance from 1 to 30 pounds?

What can go up a chimney down, but can’t go down a chimney up?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

I cannot talk, but I always reply when spoken to. What am I?

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