What is the fastest way to double your money?

Bay of Bengal is in which state?

What is the longest word in the dictionary?

What will you call your mother's brother's brother-in-law?

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?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

I have feet, but no legs. Which animal Am I?

Before Mount Everest was discovered, what was the highest mountain in the world?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

In the image below, can you find the value of an angle(y)