<PRE><B>Question 278350</B>
if we let x = the number, then we get


x + x + 1 + x + 2 = 3x + 3


we can always divide 3x + 3 by 3 to get x + 1.


not only is the number divisible by 3, but it will always be the middle number in the sequence.


some examples:


1 + 2 + 3 = 6 / 3 = 2


17 + 18 + 19 = 54 / 3 = 18


153 + 154 + 155 = 462 / 3 = 154





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