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 out the missing number in the picture attached:

Replace the question mark in the picture below.

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

In which direction should the missing arrow point?

No matter how little or how much you use me, you change me every month. What am I?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Find the hidden panda in the image below.

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?