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

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

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?

You can see three almost identical images below. Can you spot the odd one out from them?

What seven-letter word has hundreds of letters in it?

A man was convicted of a minor offence in Akbar court. Akbar decided to give him a chance. He asked him to give a statement. If the statement is true, he will be killed by lions and if it is false, he will be killed by trampling of wild elephants.

The convicted person requested help from Birbal and since the crime was not a big one, Birbal decided to help him. Whatever Birbal suggested impressed Kabir and he let the convicted person go.

What did Birbal suggest to the person?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

How many triangles are there on the puzzle below?

What kind of tree can you carry in your hand?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?