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!!!

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?

What has lots of eyes, but can’t see?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

By what process could you make a 'Tea-Table' into food?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

How can you leave a room with two legs and return with six legs?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?