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A lady being asked how old she was at the time of her marriage replied that the age of her oldest son was 13; that he was born 2 years after her marriage...
On an expedition to seize his enemy's elephants, a king marched 2 yojanas the first day.

Mesopotamian accounting evolved from simple clay token counters to a number-recording system that included impressions of these tokens on clay tablets.

A series of circles have their centers on an equilateral hyperbola and pass through its center. Show that their envelope is a lemniscate.
This is the title page of the 1779 edition of the works of Isaac Newton known at that time. Note that this is a much shorter book than the recent eight volume collection of Newton's mathematical papers, edited by Derek Whiteside.
Given two circle tangent at the point P with parallel diameters AB, CD, prove that APD and BPC are straight lines.
A copper water tank in the form of a rectangular parallelopiped is to made. If its length is to be a times its breadth, how high should it be that for a given capacity it should cost as little as possible?
Make a crown of gold copper, tin, and iron weighing 60 minae: gold and copper shall be 2/3 of it; gold and tin, 3/4 of it; and gold and iron, 3/5 of it. Find the required weights of gold, copper, tin, and iron.
Original source material from seventeen mathematicians, with commentary by Stephen Hawking.
A barrel has various holes in it. The fist hole empties the barrel in three days...

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