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?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

How many bananas can you eat if your stomach is empty?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Which word does the below Plexor means ?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What is red and smells like blue paint?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?