Natural Numbers starts from?m, 0, 1, 2, -1, whole numbers are denoted by the letter?, N, Z, Q, W, Additive identity of whole numbers, 0, 1, -1, _2, (2+3) +7= _+(3+7), 3, 7, 2, 0, Which number has no reciprocal?, 1, 0, -1, 2

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