I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

Find the value of "?" in the ball picture Riddle below:

If eleven plus two equals one, what does nine plus five equal?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Which number should replace the question mark?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Why 1729 is a magic number? Answer Logically.