If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

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 88 keys?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What goes up but never comes down?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Can you name some countries which do not have the alphabet 'A' in them?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

What is at the end of a rainbow?