Answer. -2, -1, 0, 1, 2. Solution Let x be the middle term of this sequence of 5 terms. Then the sequence is x-2, x-1, x, x+1, x+2. The sum of the terms is (x-2) + (x-1) + x + (x+1) + (x+2) = 5x. Thus 5x = 0. It gives x = 0. So the sequence is -2, -1, 0, 1, 2.