Can you solve below mathematical equation?

2^1234 - 2^1233

Different lights make me strange by changing me into different sizes. What am I?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

Which famous Hollywood movie name is hidden in the below rebus?

Solve the following series:
AZ, GT, MN, __, YB

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

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

What is the Surname of Barbie Doll?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?