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?

Why are televisions attracted to people?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Whats the next number in the below number sequence pattern.

what's the probability of getting a king or a queen from a pack of 52 cards?

What always comes into a house through the keyhole?