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?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

There was a strange boy who was born before his father. How can this be possible?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

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

I shave every day, but my beard stays the same. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.