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

What word does this rebus represent?

meta meta
meta meta

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Mother's Name is Mrs. SIXTY TWO
Son's Name is FIFTY TWO
Daughter's Name is FORTY TWO
What is Name of Father?

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

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?

How can you leave a room with two legs and return with six legs?

I’m tall when I’m young, and I’m short when I’m old. What am I?