Alternative Equation Formats

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MathML

N^{*} = 0.5 \sum_{i = 1}^{K} n_{i} (n_{i} - 1)

N^{*} = 0.5 \sum_{i = 1}^{K} n_{i} (n_{i} - 1)

$N^{*}=0.5\sum _{i=1}^{K} n_ i(n_ i-1)$