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""^(15)C(8) + ""^(15)C(9) - ""^(15)C(6) ...

`""^(15)C_(8) + ""^(15)C_(9) - ""^(15)C_(6) - ""^(15)C_(7)` is equal to ………. .

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To solve the expression \( \binom{15}{8} + \binom{15}{9} - \binom{15}{6} - \binom{15}{7} \), we can use the property of combinations that states \( \binom{n}{r} = \binom{n}{n-r} \). ### Step-by-Step Solution: 1. **Write the expression**: \[ \binom{15}{8} + \binom{15}{9} - \binom{15}{6} - \binom{15}{7} \] ...
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