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?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Which English verb becomes past tense just by rearranging the letters?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?