# Combine the three numbers in each group to get the same result

Combine the three numbers in each group to get the same result in each of the three groups. You can use addition, subtraction, multiplication, division, and exponentiation.

Group 1: $3, 17, 21$

Group 2: $16, 20, 34$

Group 3: $27, 30, 39$

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What have you tried so far? –  Ian Coley Apr 14 '13 at 17:04
Why did this get changed, invalidating Jonas12's solution? –  Ross Millikan May 15 '13 at 18:03
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## 2 Answers

this seems to work

$21*17+3=360$

$20(34-16)=360$

$30(39-27)=360$

is there any tecnique

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17 here seems to be a critical value appearing in the 1st two and partially in three –  Jonas12 Apr 14 '13 at 17:37
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14/(2+5)=2;38/(29-10)=2;(43+31)/37=2

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