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 centre of the third figure is empty. What digit should fit inside?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

what's the probability of getting a king or a queen from a pack of 52 cards?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Make a sentence consisting of three words that have the whole alphabet.

What is the riddle which can be asked all day with a different correct answer each time.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?