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

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

How many letters are in the alphabet?

What is the word or phrase?

Solve this riddle by finding the odd one out from the rest.

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

I add 5 to 9 and get 2. The answer is correct, so what am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?