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Convergence articles

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Two bicyclists travel in opposite directions around a quarter-mile track and meet every 22 seconds. When they travel in the same direction on this track, the faster passes the slower once every 3 minutes and 40 seconds. Find the rate of each rider
Now there is a wall 5 feet thick and two rats tunnel from opposite sides.
Two officers each have a company of men, the one has 40 less than the other.
Images from a 16th century text about the astrolabe and its uses
An old Chinese general led his army to a river with a steep bank. Standing atop the bank, he held a stick 6 feet long perpendicular to himself.
A new sourcebook containing the works in their original form along with a translation and a brief commentary.
Collection of historical articles that appeared in Consortium, the newsletter of COMAP.
There are two numbers whose sum equals the difference of their squares.
If two Post-boys, A and B at 59 miles distance from one another, set out in the morning in order to meet...
A biography of Arthur Cayley, the outstanding mathematician of Victorian Britain.