2025 IGCSE Additional Mathematics October/November 0606/12 Q11

2025 IGCSE Additional Mathematics October/November 0606/12 Q11

3 marks

Solve the equation \((n-4)\,{}^{n+1}\mathrm C_5={} ^{n+2}\mathrm C_7\).[3]

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Answer:\(n=40\)

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