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?

Using eight eights and addition only, can you make 1000?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What seven-letter word has hundreds of letters in it?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

Why did the Girl throw the butter out of the window?