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?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

Which tank will fill first?

How many times can you subtract the number two from the number fifty?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Count the Triangle in the figure given below:

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

If six children and two dogs were under an umbrella, how come none of them got wet?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.