Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Find the last number in the series below:

voN luJ yaM raM ---

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?