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Four Egyptian Fractions (Posted on 2013-11-13) Difficulty: 2 of 5
Find positive integer solutions to the equation 1/a + 1/b + 1/c + 1/d = 1
(a ≤ b ≤ c ≤ d). How many solutions exist?

No Solution Yet Submitted by Danish Ahmed Khan    
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typos | Comment 2 of 6 |
Very nice work, Daniel, except for your typos.

The solution that you reached is really:

(a,b,c,d):
(2,3,7,42)
(2,3,8,24)
(2,3,9,18)
(2,3,10,15)
(2,3,12,12)
(3,3,4,12)
(3,3,6,6)
(3,4,4,6)
(4,4,4,4)

  Posted by Steve Herman on 2013-11-13 12:21:42
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