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Related numbers (Posted on 2005-01-05) Difficulty: 2 of 5
Find the pattern in each line of three numbers. What goes in the blank?

1 2 9
3 4 20
5 6 12
17 12 _

See The Solution Submitted by Tristan    
Rating: 3.2000 (5 votes)

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Solution Solution | Comment 3 of 11 |

I'll admit that I didn't figure this one out, in fact, I'm still trying to....But, I had a friend take a look at it, and his solution is below. BTW, he's a chemical engineer, so I think we can trust his answer....

"if you call the first number "A" and the second number "B", you can get the third number with the following equation:

 
114 ( A / B ) - [ ( 35 B + 122 ) / 4 ]
 
Then the last row would be:
 
17, 12, 26"

  Posted by MathManiac on 2005-01-06 16:18:51
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