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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: ( You must be logged in to post comments.)
  Subject Author Date
re: 3/4 of the way (In two ways) Want a hint?Ady TZIDON2013-10-22 18:54:24
Some Thoughts3/4 of the way (In two ways)Brian Smith2013-10-22 11:33:05
QuestionWhich one do you miss?Ady TZIDON2013-10-21 18:31:43
HINT: releasing the target numberAdy TZIDON2013-10-19 18:48:29
Hints/Tipsre: Just one instance?Ady TZIDON2013-10-19 18:14:32
QuestionJust one instance?Larry2013-10-19 15:38:28
Hints/Tipsre: Not the way you intended.-(brackets)Ady TZIDON2013-10-17 19:10:09
Not the way you intended.Jer2013-10-17 15:48:58
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