Can you convert the number zero(0) into a positive number using just one mathematical operator ?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

How could a baby fall out of a twenty-story building onto the ground and live?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What is common among 11, 69, and 88?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?