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?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

Count the squares in the matchstick puzzle below?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Which is faster, Heat or Cold ? Explain.

Can you count the number of lines in the below picture?

What is black when you buy it, red when you use it, and gray when you throw it away?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

How many Watermelons are there in the below picture?

What is always in front of you but can’t be seen?