If y = 4*x*x/pi/pi then what is the ultimate limiting result of (1+y/1/1)(1+y/3/3)(1+y/5/5)(1+y/7/7)... ... within 1000*eps?
http://pi.physik.uni-bonn.de/~dieckman/InfProd/InfProd.html#InfinitexProducts for a hint
Sums with Excluded Digits
Encode Roman Numerals
Determine if input is a perfect number
peta to nano (x-ray)
Least common multiple of many numbers
Use of regexp
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