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No multiplication allowed (Posted on 2013-10-17) Difficulty: 3 of 5
Below are four groups of three numbers each.

Combine the numbers in each group using only addition, subtraction, division, exponentiation, factorials and brackets so that each triplet yields the same result (there might be several solutions):

a. 2,7,8
b. 2,5,26
c. 3,11,15
d. 3,49,71

Inspired by "e pluribus unum" 2003 & 2004.

See The Solution Submitted by Ady TZIDON    
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Comments: ( Back to comment list | You must be logged in to post comments.)
Question Just one instance? | Comment 3 of 8 |
Is each number in each triplet to be used only once?
  Posted by Larry on 2013-10-19 15:38:28
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