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 do you call a fish without an eye?

Can you spot the hidden girl in the picture below?

How can one talk without saying a single word?

I have an eye but still cannot see.

Who am I?

If your uncle’s sister is not your aunt, what relation is she to you?

What can you see in the middle of March and April that you can never see in any other month?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?