Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Give it food and it will live; give it water and it will die.

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

How can you leave a room with two legs and return with six legs?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?