Can you solve below mathematical equation?

2^1234 - 2^1233

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

A woman named Maria was at the funeral of her mother. She met a nice young man that she had never seen before and after the service, they spent a bit of time together. Then she got busy and didn’t get his name or phone number before he left. She tried to find him, but no one knew who he was or how to contact him. A few weeks later, Maria’s older sister dies and the police suspect murder. Who killed the sister?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Can you find out the remainder when 3^300 is divided by 5?

Which number should replace the question mark?

Why is the longest human nose just 11 inches?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Keyboard words are not in alphabetical order, Why?

Replace the question mark with the correct number in below Picture: