What does this rebus riddle means ?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Replace the question mark with the correct number below.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

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

How is this possible?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

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

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Role Action
Block Prevents the target player from acting
Redirect Change target player target.
Save Protects the target player from death.
Seer Sees all actions that occurred
Murderer Kills the target player

The following five players are playing:

Andy
Brian
Chris
Daniel
Fred

You are Andy the Seer and you saw the following things:
a) Brian was redirected to Chris.
b) Chris was blocked.
c) Daniel was killed.

Who is the murderer then?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?