Can you solve below mathematical equation?

2^1234 - 2^1233

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

The centre of the third figure is empty. What digit should fit inside?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Can you name some countries which do not have the alphabet 'A' in them?

Replace the question mark with the correct number in the below-given picture?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

What has to be broken before you can use it?

Why is Saturday stronger than Monday?