One day, all the courtiers from Akbar's court were gathered in the assembly hall when one of them told the Emperor that all his valuables had been stolen by a thief the previous night.
This shocked the Emperor to his core as the place where that courter stayed was the most secured in the kingdom. The Emperor thought that it is not at all possible for an outsider to enter into the courtier's house and steal the valuables. Only another courtier could commit this crime. He quickly called Birbal to identify the thief.
Birbal thought for a while and successfully solved the mystery by identifying the thief in just one statement.
What did Birbal say?

How can you make number one disappear by adding something to it?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

What goes up but never comes down?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What does does this rebus picture means ?

How many times can you subtract the number two from the number fifty?

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

Who always enjoys poor health?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?