Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Find the 8 in the below-given Image.

Can it be possible to build a house that has all its four walls facing towards the South?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

Can you make a six-letter word using the letters N, A and B ?

You know three triplets: Frank John and Wayne (need to return your money). Frank always tells the truth while John and Wayne always lie. You meet one of them on the road and can ask him a three-word question.
Which question, will you ask?

Find the missing number in the sequence below:

I can be cracked, made, told, and played. What am I?