Nilai dari 7nP3 = 6n+1P3
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Nilai dari 7nP3 = 6n+1P3
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1. Jawaban Anonyme
jawab
7 (nP3) = 6 (n+1)P3
7 n!/ (n-3)! = 6 (n+1)! / (n+1-3)!
7 n! / (n-3)! = 6 (n+1)! / (n-2)!
7 n!/(n+1)! = 6 (n-3)! / (n-2)!
7 n!/ (n+1). n! = 6 (n-3)! / (n-2)(n-3)!
7/(n+1) = 6 /(n-2)
7(n-2) = 6(n+1)
7n - 14 = 6n + 6
7n - 6n = 7 +14
n = 21