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?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can you place six X (crosses) in below board without making three in a row in any way ?