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?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Can you place three balls such that the equation shown in the picture holds true?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?