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?

What 5-letter word typed in all capital letters can be read the same upside down?

Why is the longest human nose just 11 inches?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

Look at the picture and find out which square is not linked with any of the other squares.

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

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?

Can you spot the hidden girl in the picture below?