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MATH / Suppose that *(n) = left n-2, n+2, 2n, fracn2 right. For example, *(6) = 4, 8, 12, 3. For how many distinct integers n does *(n) have exactly three distinct elements? · Discussion

Discussing Suppose that *(n) = left{ n-2, n+2, 2n, frac{n}{2} right}. For example, *(6) = {4, 8, 12, 3}. For how many distinct integers n does *(n) have exactly three distinct elements? · MATH

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