Down the question isthere
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(i) 0 + 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8 + 9 = 5
(ii) 0 - 1 - 2 - 3 - 4 - 5 + 6 + 7 + 8 - 9 = -3
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