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?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What has 88 keys?

Which number should replace the question mark?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?