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[" 19.Suppose "a(1),a(2),a(3),......a(20...

[" 19.Suppose "a_(1),a_(2),a_(3),......a_(2012)" are integers arranged on "],[" a circle.Each number is equal to the average of its two "],[" adiacent numbers.If the sum of all even indexed num- "],[" bers is "3018," what is the sum all numbers "],[[" (a) "0," (b) "1509," (c) "3018," (d) "6036]]

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