Count the number of triangles in the picture below:

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

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?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

What goes up but never comes down?

What has one eye, but can’t see?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Can you find out the remainder when 3^300 is divided by 5?