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?

Why did the Girl throw the butter out of the window?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

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

Can you name some countries which do not have the alphabet 'A' in them?

What is the next number?

77, 49, 36, 18 ?