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Convergence articles

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A man, woman, and two boys desire to cross a river, but their boat has weight restrictions!

A man has four creditors. To the first he owes 624 ducats; to the second, 546; to the third, 492; and to the fourth 368.

Review of a book that suggests that the accepted historical chronology is fundamentally flawed.

A rifle ball is fired through a three-inch plank, the resistance of which causes an unknown constant retardation of its velocity.
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.

Find the two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27

A railway train strikes a snowdrift which creates a constant resistance. How long does it take the snow to stop the train?

I found a stone but did not weigh it; after I added to it 1/7 of its weight and then 1/11 of this new weight, I weighed the total at 1 mana. What was the weight of the stone?