An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

A father's child, a mother's child, yet no one's son.

Who am I?

Do You See It?

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

Solve the mathematical equation in the picture below.

What do you see in the image below

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?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?