How can you make number one disappear by adding something to it?

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

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

What is the longest word in the dictionary?

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

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