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

Which wheel of car does not rotate when you turn your car right?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you count the number of quadrilaterals in the picture below?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

What does a man do only once in his lifetime, but women do once a year after they are 29?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?