Consider the set P = {-5, -3, -1, 1, 3, 5 ...} consisting of 1998 numbers. If a be the average of the elements in P and b be twice the average of the first 1998 natural numbers, then which of the following is equal to (a - b)?
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You say, "which of the following is equal to (a-b)?" but you didn't list anything following. Please fix this post, thank you.
Oni_Kami Jan 26, 2010
