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

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

You can see it everyday, But cannot touch it at will. What is it?

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

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

A fresh card pile is taken out of a box (the pile has 54 cards including 2 jokers). One joker is taken out and then the cards are shuffled for a good amount of times. After shuffling, two piles are made by dividing that one pile.



What is the possibility that one of the piles will have a card sequence from A to K in order?

Which is Odd One Out and why?

4377

3954

9862

8454

9831