what does the below rebus means?

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?

Can you solve the maths in the below-given picture equation?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Which country gets ill every time?

Which number should replace the question mark?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

How is a fly different from a mosquito?

Do You See It?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?