<PRE><B>Question 120355</B>
so we are finding:

A,B,C

and those are the numbers from least to greatest..

and:

2B=N
C+12=N

Lets start RANDOM!!

lets say:

1,2,3

Then 

2*2=4
4=n

C+12=n  FALSE

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Lets try a bit higher..

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11,12,13
12*2=24
24=n
13+12=24 WRONG

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That was extremely close
lets try one number up and exclude the 11.. that should work since 24 is one number down..
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12,13,14
13*2=26
14+12=26  TRUE
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The integers are: 12,13,14</PRE>